TR2022009698A2 - Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines - Google Patents

Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines

Info

Publication number
TR2022009698A2
TR2022009698A2 TR2022/009698A TR2022009698A TR2022009698A2 TR 2022009698 A2 TR2022009698 A2 TR 2022009698A2 TR 2022/009698 A TR2022/009698 A TR 2022/009698A TR 2022009698 A TR2022009698 A TR 2022009698A TR 2022009698 A2 TR2022009698 A2 TR 2022009698A2
Authority
TR
Turkey
Prior art keywords
piston
connecting rod
temperature
energy
temperature monitoring
Prior art date
Application number
TR2022/009698A
Other languages
Turkish (tr)
Inventor
Yilmaz Serdar
Original Assignee
Escom Enerji Santralleri Mueh Hiz Ins Taah San Ve Tic Ltd Sti
Escom Enerji̇ Santralleri̇ Mühhi̇zi̇nştaahsanve Ti̇cltdşti̇
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Escom Enerji Santralleri Mueh Hiz Ins Taah San Ve Tic Ltd Sti, Escom Enerji̇ Santralleri̇ Mühhi̇zi̇nştaahsanve Ti̇cltdşti̇ filed Critical Escom Enerji Santralleri Mueh Hiz Ins Taah San Ve Tic Ltd Sti
Priority to TR2022/009698A priority Critical patent/TR2022009698A2/en
Publication of TR2022009698A2 publication Critical patent/TR2022009698A2/en

Links

Landscapes

  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Testing Of Engines (AREA)

Abstract

Buluş, iki ve/veya dört zamanlı ağır yük makine/motor ve jeneratörleri başta olmak üzere piston içeren tüm makine/ motor türlerine uygulanabilen, her bir pistonu (10.1) ve piston bağlantı kolunun (10) ısıya bağlı arızalarının önüne geçmek üzere tasarlanan, makine/motor çalışırken piston bağlantı kolu (10), piston kol yatağı (10.2) durumunun anlık takibi için piston bağlantı kolundaki (10) yağ kanalına (70) yerleştirilen en az bir biyel ısı sensörüyle (20.1) sıcaklık ölçümü yapabilen ve enerjisini kendi hasat edebilen elektronik devre (40) içeren biyel ölçüm kutusu (20), Makine/motor çalışırken piston (10.1) durumunun anlık takibi için piston (10.1) eteğindeki yağ kanalına (70) yerleştirilen en az bir piston ısı sensörüyle (30.1) sıcaklık ölçümü yapabilen ve enerjisini kendi hasat edebilen elektronik devre (40) içeren piston ölçüm kutusu (30), piston sıcaklık izleme takip sistemi (A) ile ilgilidir. (şekil-1)The invention can be applied to all types of machines/engines containing pistons, especially two and/or four-stroke heavy-duty machinery/engines and generators, designed to prevent thermal failures of each piston (10.1) and piston connecting rod (10), machinery/engines. Electronic circuit capable of measuring the temperature and harvesting its own energy with at least one connecting rod temperature sensor (20.1) placed in the oil channel (70) in the piston connecting rod (10) for instant monitoring of the condition of the piston connecting rod (10), the piston rod bearing (10.2) while the engine is running. (40), connecting rod measurement box (20), which can measure temperature with at least one piston temperature sensor (30.1) placed in the oil channel (70) on the skirt of the piston (10.1) for instant monitoring of the piston (10.1) status while the machine/engine is running and uses its own energy to harvest. The piston measurement box (30), which contains an electronic circuit (40) that can operate, is related to the piston temperature monitoring system (A). (Figure 1)

Description

TARFNAME Iki ve Dört Zamanli Içten Yanmali Motorlarda/Makinalarda Piston Sicaklik Izleme Takip Sistemi TEKNIK ALAN Bulus basta dizel/fuel oil, LPG, LNG, CNG ve benzeri fosil yakitlar ile çevrim yapan, gemilerde ana tahrik makinasi, karada ise enerji santrallerinde elektrik üretiminde jeneratör olarak kullanilan iki ve dört zamanli agir yük dizel makina ve jeneratörleri basta olmak üzere, uygun tüm alanlarda uygulanabilen piston sicaklik izleme takip sistemi ile ilgilidir. Bulus özellikle, iki ve dört zamanli dizel makina ve jeneratörlerde, standart olarak her bir silindir blogunda bulunan piston ve pistonu ana krank miline baglayan piston baglanti kolunun makina çalisir vaziyette iken yag sicakliklarini es zamanli ölçüm yaparak degerlerinin anlik olarak takibini saglayarak her bir piston pim yataginin ve baglanti kolu yataginin ayri ayri anlik olarak uzaktan takibinin saglanmasi ile ilgilidir. TEKNIGIN BILINEN DURUMU Iki zamanli ve dört zamanli içten yanmali motorlar araçlar, gemiler, elektrik üretim santrallerindeki jeneratörler olmak üzere birçok alanda kullanilmaktadir. Içten yanmali motor; yakiti dogrudan dogruya silindirler içerisinde yakan ve üretilen isi enerjisini piston baglanti kolu/biyel kolu mekanizmasi ile krank miline iletir. Kisaca iki ve dört zamanli motorlari tanimlarsak; dört zamanli motorlar, pistonun bir çevriminin dört asamada (4-stroke cycle) tamamlandigi motor tipleridir. Iki zamanli motorun daha yaygin olarak kullanilan dört zamanli motordan farki, pistonun lineer hareketlerinde dört yerine iki stroka sahip olmasidir. Pistonlar silindir içinde çalismakta olup, motor zamanlarinin meydana gelmesini saglar. Yanma sonucunda meydana gelen isi enerjisini mekanik enerjiye dönüstüren motorun ilk parçasidir. Piston baglanti/biyel kolu, pistondan aldigi hareketi krank miline ileterek pistonun dogrusal hareketini dairesel harekete çevrilmesine yardimci olan unsurdur. Krank mili motor bloguna yataklandirilmakta olup, pistondan aldigi dogrusal hareketi dairesel harekete çevirerek volana iletmektedir. Karter, motorun alt kismini örterek, toz, toprak, yagmur, çamur, gibi yabanci maddelerin motorun içine girmesini önleyen, bunun yani sira motor yagina depoluk eden ve motor yaginin sogumasini saglayan yapidir. Iki ve dört zamanli dizel makina ve jeneratörlerde makinalarda çalisir vaziyette iken, pistonda görülebilen piston sarmasi, segman sarmasi, gömlek sarmasi, yüksek yanma sicakligi gibi piston hatalari olusabilmektedir. Ayrica pistonun krank miline baglantisini yapan biyel/piston baglanti kollarinda görülen piston baglanti kolu ve yatagi (connecting rod bearing failure) arizasi büyük is-üretim kaybina ve çok yüksek tamir, yedek parça ve isçilik giderlerine sebebiyet vermektedir. Bu tür arizalarin görülmesinin temel nedeni makine çalisir ve yük altinda iken, pistondan ve piston baglanti kolundan sicaklik verilerinin saglikli alinamamasidir. Her bir pistondan ve piston baglanti kolundan direk gecikmesiz olarak anlik es zamanli sicaklik verisi almasina imkan saglayacak bir sistem bulunmadigindan, halihazirda kullanilan dolayli ve gecikmeli, dogru odak eksikligi bulunan, ariza olduktan sonra haber veren konvansiyel ve geleneksel yöntemler kullanilmaktadir. Iki ve dört zamanli dizel makina ve jeneratörler çalisir durumda iken karter iç blogunun çok sicak, yag ve yag buharli basinç altinda olmasi, piston baglanti kollarinin ve yataklarinin yüksek devirlerde dönüyor olmasi; konvansiyel yöntemlerle enerji ve data transferi için kablolama imkaninin olmamasi, ölçümü yapacak sisteme yine ark olusumu, kisa devre, patlama gibi riskleri tasidigindan bataryali sistemlerin yerlestirilemiyor olmasi, simdiye kadar, böyle bir sistemin gelistirilememesinin ana sebepleridir. Fakat, makina çalisirken de özellikle piston ve piston baglanti kolu sicakliklarinin sürekli takip edilebiliyor olmasi da kaçinilmaz bir gerekliliktir. Mevcut teknikte kullanilan uygulamalardan biri siçrayan yag görüntüleme sistemidir (splash oil monitoring system) . Bu sistemde karter içinde rasgele siçrayan yaglama yaglarini karter kapaginin iç kismina monte edilen küçük bir kutuya kanalize edilen, burada biriken yagin sicakligini ölçen termometreler tarafindan ölçümler alinmaktadir. Bu sistemin bagli oldugu herhangi bir karter kapagindaki sicaklik sensörünün yüksek sicaklik alarmi vermesi, genel bir sicaklik yükselmesi alarmi oldugu ve bu alarmin gecikmeli oldugu için karterin tüm elemanlarinin dikkatli incelenmesine ve yüksek sicakliga sebebiyet veren arizanin tam yerinin bulunmasini gerektirmektedir. Sistem tarafindan verilen alarm, pistonun kendisinden, gömlekten (liner), piston ve gömlek sikismasindan, kam milinden sizan yagdan kaynakli, ya da piston kolu yatagindan da kaynaklaniyor olabilir. Kisaca, sicaklik alarmi veren bu sistem, direk, gecikmesiz ve dogru odakli bir bilgiden ziyade genel bir bilgi vermektedir. Mevcut teknikte kullanilan uygulamalardan bir digeri de yag buhari konstrasyonu ölçüm sistemidir (oil mist concentration detection unit). Bu sistemde, karter içinde dolasan yag buharli havayi sürekli ölçmekte, herhangi bir mekanik aksamdaki ariza, sarma, sikisma, sürtünme neticesinde olusan yanma etkisiyle, yag buhari konstantrasyonu içerisinde yükselen duman miktarini teneffüs ederek, yag buhari konsantrasyonu yüksek alarmi vermektedir. Bu sistemde de ariza olduktan, mekanik aksamda ariza meydana geldikten, yataklarda sarma, sürtünme gerçeklestikten sonra uyaran, ve uyarisi da yine siçrayan yag sisteminde oldugu gibi dogru odakli olmayan, alarm verilen karterin kapaginin açilarak incelenmesi neticesinde arizanin tam olarak hangi aksamda gerçeklestigi bulunabilen bir sistemdir. Sonuç olarak yukaridaki problemlerin varligi ve mevcut çözümlerin yetersizligi özellikle dizel/fuel oil, LPG, LNG, CNG ve benzeri fosil yakitlar ile çevrim yapan gemilerde ana tahrik mekanizmasi ve enerji üretim santrallerindeki jeneratörlerde kullanilan motor/makinalarda piston ve piston baglanti kolu sicakliklarinin anlik izlenmesi ve takibi ile ilgili inovatif ve teknolojik bir gelistirme yapma gerekliligi ortaya çikarmistir. BULUSUN AMACI Mevcut bulus, yukarida bahsedilen gereksinimleri karsilayan, tüm dezavantajlari ortadan kaldiran ve ilave bazi avantajlar getiren piston sicaklik takip izleme sistemi ile ilgilidir. Bulusun ana amaci makine/motor çalisirken hareketli parçalardan piston baglanti kolu yatagi durumunun anlik takibi, piston pim yatagi durumunun anlik takibi, yanma odasi ile direk temas halinde olan piston kafa kismina sogutma amaciyla giren ve çikan yagin sicaklik farkinin anlik hesaplanarak piston kafasi sogutma veriminin izlenmesine imkan veren bir piston sicaklik izleme takip sistemi ortaya koymaktir. Bulusun diger amaci dizel/fuel oil, LPG, LNG, CNG ve benzeri fosil yakitlar ile çevrim yapan gemilerde ana tahrik mekanizmasi ve enerji üretim santrallerindeki jeneratörlerde kullanilan motor/makinalarda; büyük is-üretim kaybina, çok yüksek tamir, yedek parça, zaman ve isçilik giderlerine sebebiyet veren gömlek sarmasi, segman sarmasi, yüksek yanma sicakligi gibi piston arizalari, piston baglanti kolu ve baglanti kol yatagi (connecting rod bearing failure) arizalarini önlemek veya ariza olma ihtimallerini en aza indirmek üzere tasarlanan piston sicaklik izleme takip sistemi ortaya koymaktir. Bulusun amaci motor içerisindeki piston ve pistonu yataklayan baglanti/biyel kolunda yer alan yag transfer kanallarina temas edecek sekilde yerlestirilen, direk ve dolaysiz olarak piston ve piston baglanti kolundan sicaklik verilerini makina çalisir ve yük altinda iken alabilen, bu verileri alirken manyetik kaldirma / piezo elektrik / peltier gibi enerji hasat yöntemlerinden en az biriyle kablosuz ve bataryasiz kendi enerjisini kendisi üretebilen, enerji hasadi ve regülasyonu ile gerekli enerjiyi depolayabilen, ölçüm verilerini toplayarak piston ölçüm kutusu (pitem-out olarak da adlandirilmaktadir) ve biyel ölçüm kutusuna (pitem-in olarak da adlandirilmaktadir) transfer eden, ölçüm kutularindan elde edilen datalari da NFC, ZIGBEE, MQTT, OPC-UA, Z-WAVE, LORAWAN, SIGFOX, BLE (Bluetooth Low Enerji) veya WiFi kablosuz haberlesme protokolleriyle makine üzerinde bir bilgi ekranina ve uzaktan takip edilecek bir alana (Makina Ana Kumanda Odasina gibi) iletebilen bir piston sicaklik izleme takip sistemi ortaya koymaktir. Bulusun diger amaci verileri direk kaynagindan hizli, odakli ve arizanin boyutu büyümeden verecek, kablosuz, bataryasiz, kendi enerjisini kendisi üretebilen, haberlesmesini kablosuz gerçeklestirebilen etkin bir kontrol saglayan piston sicaklik izleme takip sistemi ortaya koymaktir. Piston sicaklik izleme takip sistemi sayesinde, giris ve çikis yag sicakligi arasindaki farkin sürekli olarak izlenmesi sebebiyle zaman içinde olusacak diferansiyel farkin degisimi veya anlik degisimler dogrudan görülebilecek ve her bir pistonun sogutma verimi dogrudan izlenecek ve buna göre bakim plani olusturulabilecek, bilinmezligin ortadan kaldirildigi piston sicaklik izleme takip sistemi elde etmektir. Bulusun diger bir amaci piston ölçüm kutusu ve biyel ölçüm kutularina çalisma enerjisinin kazandirilmasi için manyetik kaldirma, piezo elektrik, peltier gibi yöntemlerle hasat edilen enerjinin çevrimi ve regülasyonu için AC-DC akim çevirici ve düzenleyici regülatör içermesidir. Regüle edilen enerjiyi batarya gerektirmeksizin depolayabilen süperkapasitör, verilerin kaydedilerek aktarimlarinin saglandigi sensör kümesi, bahsedilen sensör kümesinden elde edilen verilerin kontrolü için kontrol ünitesi, verinin kontrol ünitesinde gömülü bir yazilimla verileri belirli periyotlarda ana kontrol ünitesine veya bir görüntü aygitina iletmesi için Bluetooth, Wifi gibi kablosuz veri aktarim protokollerinden en az birini barindiran haberlesme ünitesi, kompozit veya alüminyum malzemeden mamul gövde içermesidir. Bulusun yapisal ve karakteristik özellikleri ve tüm avantajlari asagida verilen sekiller ve bu sekillere atiflar yapilmak suretiyle yazilan detayli açiklama sayesinde daha net olarak anlasilacaktir ve bu nedenle degerlendirmenin de bu sekilleri ve detayli açiklama göz önüne alinarak yapilmasi gerekmektedir. SEKILLERIN KISA AÇIKLAMASI Mevcut bulusun yapilanmasi ve ek elemanlarla birlikte avantajlarinin en iyi sekilde anlasilabilmesi için asagida açiklamasi yapilan sekiller ile birlikte degerlendirilmesi gerekir. Sekil - 1; Bulus konusu piston sicaklik izleme takip sisteminde, krank mili üzerindeki piston ile irtibatli piston baglanti kollarindan veriyi biyel ölçüm kutusu (pitem-in) ve piston ölçüm kutusunun (pitem-out) konumlandigi bölgenin genel görünümüdür. Sekil - 2; Bulus konusu piston sicaklik izleme takip sisteminde, krank mili üzerindeki piston ile irtibatli piston baglanti kollarindan veriyi biyel ölçüm kutusu (pitem-in) ve piston ölçüm kutusunun (pitem-out) konumlandigi ve yag sensörlerin temas ettigi yag kanallarinin görülebildigi kesit görünümüdür. Sekil- 3; Bulus konusu piston sicaklik izleme takip sisteminin ana unsuru biyel ölçüm kutusu ve piston ölçüm kutusunun iç devre detay görünümüdür. Sekil - 4; Bulus konusu piston sicaklik izleme takip sisteminde, enerji hasati yaparak piston sicakligini ölçen ve elde edilen verileri aktaran sensörler barindiran, piston ölçüm kutusu perspektif görünümüdür. Sekil - 5; Bulus konusu piston sicaklik izleme takip sisteminde, enerji hasati yaparak piston baglanti kolu/biyel kolu sicakligini ölçen ve elde edilen verileri aktaran sensörler barindiran, biyel ölçüm kutusu perspektif görünümüdür. REFERANS N U MARALARI A. Piston sicaklik izleme takip sisteminde . Piston baglanti kolu .1 Piston .2 Piston kol yatagi .3 Piston pim yatagi . Biyel ölçüm kutusu .1 Biyel isi sensörü . Piston ölçüm kutusu .1 Piston isi sensörü 40. Elektronik devre 40.1 Iletisim modülü 40.2 Sensör kümesi 40.3 Güç ünitesi 40.4 Regülatör 40.5 AC/DC dönüstürücü 40.6 Enerji hasat ünitesi 50. Baglanti civatasi 60. Veri merkezi 70. Yag kanali Çizimlerin mutlaka ölçeklendirilmesi gerekmemektedir ve mevcut bulusu anlamak için gerekli olmayan detaylar ihmal edilmis olabilmektedir. Bundan baska, en azindan büyük ölçüde özdes olan veya en azindan büyük ölçüde özdes islevleri olan elemanlar, ayni numara ile gösterilmektedir. BULUSUN DETAYLI AÇIKLAMASI Bu detayli açiklamada, bulus konusu piston sicaklik izleme takip sisteminin (A) tercih edilen yapilanmalari, sadece konunun daha iyi anlasilmasina yönelik olarak ve hiçbir sinirlayici etki olusturmayacak sekilde açiklanmaktadir. Temel olarak piston sicaklik izleme takip sisteminin (A) tercihen uygulanacagi iki veya dört zamanli dizel gemi makina ve jeneratörlerinin genel olarak çalisma prensibi su sekildedir; yanma odasinda gerçeklesen patlama sonucu olusan basinç pistonlari (10.1) lineer olarak asagiya dogru iter. Piston baglanti kolu (10) ile pistonun (10.1) lineer hareketi kranka rotasyon hareketi saglar. Motor blogu içerisinde gezen/devirdaim yapan yag ise motor alt/üst kismindaki karterde toplanir. Biyel kolunun (10) içerisinde devir daim eden yag kanallari (70) vardir. Biyel ölçüm kutusu (20) piston baglanti kolunun (10) üst yatagindan çikan yagin sicakligini ölçer, piston baglanti kolu (10) üst yataginin hemen üzerine yerlestirilir. (Sekil-1). Biyel ölçüm kutusu (20) ortasinda çikinti yapacak sekilde duran biyel isi sensörü (20.1) Piston baglanti kolu (10) üst kepinde delik açilmak suretiyle, piston baglanti kolunun (10) içinden pistona (10.1) giden yag kanalina (70) temas edecek sekilde yerlestirilir ve civatalar (50) ile piston baglanti koluna (10) sabitlenir. Yag sicakligi PT100 ve benzeri sicaklik sensörü ile ölçülür. Piston ölçüm kutusu (30) Piston (10.1) isisinin anlik ölçümü için yaglama ve sogutma vazifesini yapan yagin kartere bosaldigi yerde, piston (10.1) etegine civatalar (50) ile monte edilir. Biyel isi sensörü (20.1) gibi piston isi sensörü (30.1) de yag kanalinin (70) içerisindeki yaga temas edecek sekilde konumlandirilir. Piston (10.1) eteginden dökülen yag, piston ölçüm kutusu (30) haznesinden geçerken sicakligi ölçülür. Yag sicakligi PT100 ve benzeri sicaklik sensörü ile ölçülür. (Sekil-2). Bulus konusu piston sicaklik izleme takip sistemi (A) kullanicilarina, her bir piston kolu (10) ve ona bagli piston kol yatagindan (10.2) ayrica her bir piston pim yatagindan (10.3) dogrudan ve gecikmesiz olarak anlik sicaklik bilgilerinin alinarak, piston baglanti kolu (10) ve pistonun (10.1) anlik olarak uzaktan takip edilmesini saglamaktadir. Biyel ölçüm kutusu (20) ve piston ölçüm kutusu (30) içerisinde bir elektronik devre (40) ve bu devre için gerekli enerjiyi saglayan en az bir olmak üzere muhtelif sayida enerji hasat ünitesi (40.6) bulunmaktadir. Elde edilen akimin dönüstürülmesi için AC/DC dönüstürücü (40.5) , kazanilan enerjiyi düzenleyen regülatör (40.4), regüle edilen enerjiyi batarya gerektirmeksizin depolayabilen güç ünitesi (40.3), verilerin kaydedilerek kontrolü için akilli kartli kontrol ünitesi içeren sensör kümesi (40.2), bahsedilen sensör kümesinden (40.2) elde edilen verinin gömülü bir yazilimla verileri belirli periyotlarda veri merkezine (60) veya bir görüntü aygitina iletmesi için Bluetooth, Wifi gibi kablosuz veri aktarim protokollerinden en az birini barindiran iletisim modülü (40.1) içermektedir. (Sekil-3). Bulus konusu piston sicaklik izleme takip sisteminin (A) ana unsuru olan biyel ölçüm kutusu (20) ve piston ölçüm kutusu (30) tasariminda dikkat edilmesi gereken husus, agirlik ve fiziksel sinirlardir. Tasarlanan cihazlar piston baglanti kolu (10) üzerine monte edilecegi toplam agirlik miktari ve fiziksel hacim, piston baglanti kolu (10) ve pistonun (10.1) denge agirliklarinin balans ayarini bozmamasina, herhangi bir aksama dönüs sirasinda temas etmeyecek sekilde yerlestirilmesine dikkat edilmelidir. Sistemin uygulanacagi motor/makinalari üreten firmalar tarafindan müsade edilen agirlik miktari ve fiziksel hacim oranina göre her bir makina için ayri ayri olarak tasarlanmasini gerektirmekte olup, piston sicaklik izleme takip sisteminin (A) istenen agirlikta ve fiziksel hacimde tasarlanmasi ve farkli makinelere adapte edilmesi kolaylikla saglanabilmektedir. Piston baglanti kolu (10) ve piston (10.1) etek kisminda yapilacak olan montajlarda delik delme islemi islem yapilacak gövdenin ebatlarina göre degiskenlik göstermektedir. Burada dikkat edilmesi gereken husus biyel isi sensörü (20.1) ve piston isi sensörünün (30.1) montajinda yag kanalindan (70) kaçaklara sebebiyet vermeyecek sekilde delik açilmasi ve yaga dogrudan temas ederek en dogru isi ölçüm sonuçlarinin elde edilmesidir. (Sekil-4), (Sekil-5). Piston sicaklik izleme takip sistemi (A) etkin ve yüksek verimli izlemenin yapilabildigi, bakim planlamalarinin kolaylikla yapilabildigi bir takip sistemidir. Örnegin, 18 silindirli 9 MW güce sahip bir dizel motorun bakim kataloguna göre, her 12000 saatte bir adet pistonun (10.1) sökülmesi ve dagitilmasi, piston (10.1) kafasi sogutma odasinda olusan depozitin kazinarak kalinliginin ölçülmesi istenmektedir. Bu islem yaklasik 4 isçi ile 2 gün sürer. Eger bu depozit kalinligi 1 mm'nin üzerinde çikarsa 18 adet pistonun (10.1) tamaminin sökülmesi, dagitilmasi, temizlenmesi ve kontrollerinin yapilmasi gerekmektedir ki, bu islem ise en az 30 gün sürer ve büyük bir is gücü, yedek parça stoklanmasi ve üretim kaybina sebebiyet verir. 2 gün ile 30 gün arasindaki bilinmez bir süre bakim planlamasi yapan isletmeler için büyük sorunlar çikarabilir. Elektronik devre (40) üzerinde toplanan veriler, yine piston sicaklik izleme takip sisteminin (A) kontrol ettigi enerji verimliligi prensibiyle belirlenen periyotlarda, bir görüntüleme sistemi, mobil cihaz, bilgisayar veya bunlardan en az ikisinin kullanilarak olusturuldugu karma bir veri merkezine (60) aktarilarak izlenmekte ve kaydedilmektedir. Piston baglanti kolu (10) alinan isi verisi ile pistondan (10.1) alinan isi verisi anlik olarak karsilastirilmaktadir. Böylece piston (10.1) kafasi sogutma verimi elde edilmis olur. Böylece her bir piston (10.1), piston baglanti kolu (10) ve ona bagli piston kol yatagindan (10.2) dogrudan ve gecikmesiz olarak anlik sicaklik bilgilerini almasina imkân saglayacak, halihazirda kullanilan dolayli ve gecikmeli ölçüm yapabilen, ariza meydana geldikten sonra haber veren konvansiyel ve geleneksel yöntemlerin yerine kullanabilecegi, makinaya adaptasyonunun ve devreye alinmasinin çok kolay oldugu yenilikçi bir piston sicaklik izleme takip sistemi (A) elde edilmektedir. Bu basvurunun koruma kapsami istemler kisminda belirlenmis olup yukarida kesinlikle örnekleme amaciyla anlatilanlarla sinirli tutulamaz teknikte uzman bir kisinin bulusta ortaya konan yeniligi, benzer yapilanmalari kullanaraktan ortaya koyabilecegi ve/veya bu yapilanmayi ilgili teknikte kullanilan benzer amaçli diger alanlara da uygulayabilecegi açiktir. Dolayisiyla böyle yapilanmalarin yenilik ve özellikle teknigin bilinen durumunun asilmasi kriterinden yoksun olacagi da asikardir. TR TR TR DESCRIPTION Piston Temperature Monitoring and Tracking System in Two and Four Stroke Internal Combustion Engines/Machines TECHNICAL FIELD The invention is primarily used as the main propulsion machine in ships and as a generator in the production of electricity in power plants on land, which cycles with diesel/fuel oil, LPG, LNG, CNG and similar fossil fuels. It is about the piston temperature monitoring system that can be applied in all suitable areas, especially in two- and four-stroke heavy-duty diesel machines and generators. The invention is particularly useful in two- and four-stroke diesel machines and generators, by simultaneously measuring the oil temperatures of the piston located in each cylinder block as standard and the piston connecting rod connecting the piston to the main crankshaft, while the machine is running, and monitoring the values of each piston pin bearing and It is about providing instant remote monitoring of the connecting rod bearing individually. KNOWN STATE OF THE TECHNOLOGY Two-stroke and four-stroke internal combustion engines are used in many areas, including vehicles, ships, and generators in electricity generation plants. Internal-combustion engine; It burns the fuel directly in the cylinders and transmits the generated heat energy to the crankshaft via the piston connecting rod/connecting rod mechanism. If we briefly define two- and four-stroke engines; Four-stroke engines are engine types in which one cycle of the piston is completed in four stages (4-stroke cycle). The two-stroke engine differs from the more commonly used four-stroke engine in that it has two strokes instead of four in the linear movements of the piston. Pistons work within the cylinder and ensure engine timing occurs. It is the first part of the engine that converts the heat energy resulting from combustion into mechanical energy. Piston connection/connecting rod is the element that helps convert the linear motion of the piston into circular motion by transmitting the motion it receives from the piston to the crankshaft. The crankshaft is mounted on the engine block and converts the linear motion it receives from the piston into circular motion and transmits it to the flywheel. The crankcase is the structure that covers the lower part of the engine and prevents foreign substances such as dust, soil, rain, mud from entering the engine, as well as storing the engine oil and allowing the engine oil to cool. While the machines are operating in two- and four-stroke diesel machines and generators, piston errors such as piston seizure, ring seizure, liner seizure, and high combustion temperature may occur. In addition, piston connecting rod and bearing failure, which is seen in the connecting rod/piston connecting rods that connect the piston to the crankshaft, causes great work-production loss and very high repair, spare parts and labor costs. The main reason why such malfunctions occur is that temperature data cannot be obtained accurately from the piston and piston connecting rod while the machine is running and under load. Since there is no system that allows instant and simultaneous temperature data to be obtained directly from each piston and piston connecting rod without delay, the currently used conventional and conventional methods that are indirect, delayed, lack accurate focus, and notify after a malfunction occurs. While two- and four-stroke diesel engines and generators are in operation, the crankcase inner block is very hot, under oil and oil vapor pressure, and the piston connecting rods and bearings are rotating at high speeds; The main reasons why such a system has not been developed so far are the lack of cabling for energy and data transfer with conventional methods, and the fact that battery-powered systems cannot be installed in the system that will make the measurement, as they carry risks such as arcing, short circuit, explosion. However, it is an inevitable necessity that the temperatures of the piston and piston connecting rod can be constantly monitored while the machine is operating. One of the applications used in the current technique is the splash oil monitoring system. In this system, measurements are taken by thermometers that channel the lubricating oils randomly splashing in the crankcase to a small box mounted on the inside of the crankcase cover, and measure the temperature of the oil accumulated there. The fact that any temperature sensor on the crankcase cover to which this system is connected gives a high temperature alarm requires careful examination of all elements of the crankcase and finding the exact location of the fault causing the high temperature, since it is a general temperature rise alarm and this alarm is delayed. The alarm given by the system may be caused by the piston itself, the liner, piston and liner jamming, oil leaking from the camshaft, or the piston rod bearing. In short, this temperature alarm system provides general information rather than direct, delay-free and accurately focused information. Another application used in the current technique is the oil mist concentration measurement system (oil mist concentration detection unit). In this system, it constantly measures the oil vapor air circulating in the crankcase, inhales the amount of smoke rising in the oil vapor concentration due to the burning effect caused by any mechanical part malfunction, winding, jamming or friction, and gives an alarm of high oil vapor concentration. In this system, it is a system that warns after a malfunction occurs in the mechanical parts, after the winding or friction occurs in the bearings, and the warning is not focused correctly, as in the splashing oil system, and as a result of examining the alarmed crankcase by opening its cover, it is a system that can find out exactly which part of the fault occurred. As a result, the existence of the above problems and the inadequacy of existing solutions are the real-time monitoring and tracking of piston and piston connecting rod temperatures in engines/machines used in generators in power generation plants and the main drive mechanism in ships that cycle with diesel/fuel oil, LPG, LNG, CNG and similar fossil fuels. It has revealed the necessity of making innovative and technological development regarding. PURPOSE OF THE INVENTION The present invention relates to a piston temperature monitoring system that meets the above-mentioned requirements, eliminates all disadvantages and brings some additional advantages. The main purpose of the invention is to enable instant monitoring of the piston connecting rod bearing condition from moving parts while the machine/engine is running, instant monitoring of the piston pin bearing condition, and monitoring of the piston head cooling efficiency by instantly calculating the temperature difference of the oil entering and exiting the piston head part, which is in direct contact with the combustion chamber, for cooling purposes. The aim is to present a piston temperature monitoring system that provides Another purpose of the invention is to use diesel/fuel oil, LPG, LNG, CNG and similar fossil fuels in the main propulsion mechanism of ships and the engines/machines used in generators in energy production plants; To prevent or prevent piston failures such as liner wrapping, ring wrapping, high combustion temperature, piston connecting rod and connecting rod bearing failure, which cause large work-production losses, very high repair, spare parts, time and labor costs. The aim is to introduce a piston temperature monitoring system designed to minimize the risks. The purpose of the invention is to obtain temperature data directly and indirectly from the piston and piston connecting rod, placed in contact with the oil transfer channels in the piston and connecting rod bearing the piston in the engine, while the machine is running and under load, while receiving this data, magnetic levitation / piezo electric / It can produce its own energy wirelessly and without batteries with at least one of the energy harvesting methods such as Peltier, can store the necessary energy by energy harvesting and regulation, collects the measurement data and sends it to the piston measurement box (also called pitem-out) and connecting rod measurement box (also called pitem-in). ) transfers the data obtained from the measurement boxes to an information screen on the machine and to an area to be monitored remotely via NFC, ZIGBEE, MQTT, OPC-UA, Z-WAVE, LORAWAN, SIGFOX, BLE (Bluetooth Low Energy) or WiFi wireless communication protocols. It is to create a piston temperature monitoring system that can transmit (such as to the Machine Main Control Room). Another purpose of the invention is to provide a wireless, battery-free, piston temperature monitoring system that can produce its own energy and communicate wirelessly, providing an effective control system that will provide data directly from the source, quickly, focused and without increasing the size of the fault. Thanks to the piston temperature monitoring tracking system, the change in the differential difference or instantaneous changes that will occur over time due to the continuous monitoring of the difference between the inlet and outlet oil temperature can be directly seen and the cooling efficiency of each piston will be directly monitored and a maintenance plan can be created accordingly. Piston temperature monitoring eliminates the uncertainty. is to obtain a tracking system. Another purpose of the invention is to include an AC-DC current converter and regulating regulator for the conversion and regulation of the energy harvested by methods such as magnetic levitation, piezo electricity and Peltier in order to gain operating energy to the piston measuring box and connecting rod measuring boxes. Supercapacitor that can store regulated energy without requiring a battery, sensor cluster where the data is recorded and transferred, control unit for controlling the data obtained from the said sensor cluster, wireless data such as Bluetooth and Wifi to transmit the data to the main control unit or a display device at certain periods through a software embedded in the control unit. The communication unit, which includes at least one of the transfer protocols, contains a body made of composite or aluminum material. The structural and characteristic features and all the advantages of the invention will be understood more clearly thanks to the figures given below and the detailed explanation written by making references to these figures, and therefore the evaluation should be made taking these figures and the detailed explanation into consideration. BRIEF DESCRIPTION OF THE DRAWINGS In order to best understand the structure of the present invention and its advantages with additional elements, it should be evaluated together with the figures explained below. Figure 1; In the piston temperature monitoring system that is the subject of the invention, it is the general view of the region where the connecting rod measuring box (pitem-in) and the piston measuring box (pitem-out) are located, which receives data from the piston connecting arms connected to the piston on the crankshaft. Figure - 2; In the piston temperature monitoring system that is the subject of the invention, it is a cross-sectional view in which the connecting rod measuring box (pitem-in) and piston measuring box (pitem-out) are located and the oil channels in contact with the oil sensors can be seen. Figure- 3; The main element of the piston temperature monitoring system subject to the invention is the connecting rod measurement box and the internal circuit detail view of the piston measurement box. Figure - 4; The piston temperature monitoring system that is the subject of the invention is a perspective view of the piston measurement box, which contains sensors that measure the piston temperature by harvesting energy and transfer the obtained data. Figure - 5; The subject of the invention is the perspective view of the connecting rod measurement box in the piston temperature monitoring and tracking system, which contains sensors that measure the temperature of the piston connecting rod/connecting rod by harvesting energy and transfer the obtained data. REFERENCE NUMBERS A. Piston temperature monitoring system. Piston connecting rod .1 Piston .2 Piston rod bearing .3 Piston pin bearing . Connecting rod measuring box .1 Connecting rod temperature sensor. Piston measuring box .1 Piston temperature sensor 40. Electronic circuit 40.1 Communication module 40.2 Sensor cluster 40.3 Power unit 40.4 Regulator 40.5 AC/DC converter 40.6 Energy harvesting unit 50. Connecting bolt 60. Data center 70. Oil channel The drawings do not necessarily have to be scaled and are available Details that are not necessary to understand the invention may be neglected. Furthermore, elements that are at least substantially identical or have at least substantially identical functions are designated by the same number. DETAILED DESCRIPTION OF THE INVENTION In this detailed description, the preferred embodiments of the piston temperature monitoring system (A) of the invention are explained only for a better understanding of the subject and in a way that does not create any limiting effect. Basically, the general working principle of two- or four-stroke diesel ship engines and generators, where the piston temperature monitoring system (A) is preferably applied, is as follows; The pressure resulting from the explosion in the combustion chamber pushes the pistons (10.1) downwards linearly. The linear movement of the piston connecting rod (10) and the piston (10.1) provides rotation movement to the crank. The oil circulating/circulating within the engine block is collected in the crankcase at the bottom/top of the engine. There are circulating oil channels (70) inside the connecting rod (10). The connecting rod measuring box (20) measures the temperature of the oil coming out of the upper bearing of the piston connecting rod (10), and is placed just above the upper bearing of the piston connecting rod (10). (Figure 1). The connecting rod temperature sensor (20.1), which stands protruding in the middle of the connecting rod measurement box (20), is placed in contact with the oil channel (70) leading to the piston (10.1) through the piston connection rod (10) by opening a hole in the upper cap of the piston connection rod (10). and it is fixed to the piston connecting rod (10) with bolts (50). Oil temperature is measured with PT100 or similar temperature sensor. Piston measuring box (30) is mounted on the skirt of the piston (10.1) with bolts (50), where the oil that serves as lubrication and cooling discharges into the crankcase for instant measurement of the piston (10.1) temperature. Like the connecting rod temperature sensor (20.1), the piston temperature sensor (30.1) is positioned to contact the oil in the oil channel (70). The temperature of the oil spilled from the skirt of the piston (10.1) is measured as it passes through the piston measurement box (30). Oil temperature is measured with PT100 or similar temperature sensor. (Figure-2). The piston temperature monitoring system (A) of the invention provides its users with the ability to obtain instantaneous temperature information directly and without delay from each piston rod (10) and the piston rod bearing (10.2) connected to it, as well as from each piston pin bearing (10.3), by obtaining instantaneous temperature information from the piston connecting rod (10.3). 10) and piston (10.1) can be monitored instantly from a distance. There is an electronic circuit (40) within the connecting rod measuring box (20) and the piston measuring box (30) and various energy harvesting units (40.6), at least one of which provides the necessary energy for this circuit. AC/DC converter (40.5) to convert the obtained current, regulator (40.4) to regulate the gained energy, power unit (40.3) that can store the regulated energy without requiring a battery, sensor cluster (40.2) containing a smart card control unit to record and control the data, the said sensor It contains a communication module (40.1) that contains at least one of the wireless data transfer protocols such as Bluetooth and Wifi to transmit the data obtained from the cluster (40.2) to the data center (60) or a display device at certain periods with an embedded software. (Figure-3). The points to be considered in the design of the connecting rod measuring box (20) and piston measuring box (30), which are the main elements of the piston temperature monitoring system (A) of the invention, are weight and physical limits. The total amount of weight and physical volume in which the designed devices will be mounted on the piston connecting rod (10), care should be taken to ensure that the piston connecting rod (10) and the piston (10.1) do not disrupt the balance of the balance weights, and that they are placed in such a way that they do not come into contact with any parts during rotation. It requires that the system be designed separately for each machine according to the amount of weight and physical volume ratio allowed by the companies producing the engine/machines on which the system will be applied, and the piston temperature monitoring system (A) can be easily designed at the desired weight and physical volume and adapted to different machines. In the installations to be made on the piston connecting rod (10) and piston (10.1) skirt, the drilling process varies depending on the dimensions of the body to be processed. What needs to be taken into consideration here is that in the assembly of the connecting rod temperature sensor (20.1) and piston temperature sensor (30.1), a hole should be drilled in the oil channel (70) in a way that does not cause leaks, and the most accurate temperature measurement results should be obtained by directly contacting the oil. (Figure-4), (Figure-5). Piston temperature monitoring and tracking system (A) is a tracking system where effective and highly efficient monitoring can be done and maintenance planning can be made easily. For example, according to the maintenance catalog of a diesel engine with 18 cylinders and 9 MW power, it is required to disassemble and disassemble the piston (10.1) every 12000 hours, and to measure the thickness of the deposit formed in the cooling chamber of the piston (10.1) head by scraping it. This process takes 2 days with approximately 4 workers. If this deposit thickness exceeds 1 mm, all 18 pistons (10.1) must be dismantled, distributed, cleaned and checked, which takes at least 30 days and causes a great deal of labor, spare parts stocking and production loss. . An unknown period between 2 and 30 days can cause major problems for businesses planning maintenance. The data collected on the electronic circuit (40) is monitored by transferring it to a hybrid data center (60) created using an imaging system, mobile device, computer or at least two of these, at periods determined by the energy efficiency principle controlled by the piston temperature monitoring system (A). and is recorded. The heat data received from the piston connecting rod (10) is compared instantly with the heat data received from the piston (10.1). Thus, piston (10.1) head cooling efficiency is achieved. Thus, it will enable it to receive instantaneous temperature information directly and without delay from each piston (10.1), piston connecting rod (10) and the piston rod bearing (10.2) connected to it, and will enable the currently used conventional and An innovative piston temperature monitoring system (A) is obtained, which can be used instead of traditional methods and is very easy to adapt to the machine and put into operation. The scope of protection of this application is determined in the claims section and cannot be limited to those explained above for exemplary purposes. It is clear that a person skilled in the art can demonstrate the innovation put forward in the invention by using similar structures and/or apply this structure to other areas with similar purposes used in the relevant technique. Therefore, it is obvious that such structures will lack the criteria of innovation and especially exceeding the known state of the technique.TR TR TR

Claims (1)

1.ISTEMLER . Bulus, iki ve/veya dört zamanli agir yük makine/motor ve jeneratörleri basta olmak üzere piston içeren tüm makine/motor türlerine uygulanabilen, her bir pistonu (10.1) ve piston baglanti kolunun (10) isiya bagli arizalarinin önüne geçmek üzere tasarlanan piston sicaklik izleme takip sistemi (A) olup, özelligi; o Makine/motor çalisirken piston baglanti kolu (10), piston kol yatagi (10.2) durumunun anlik takibi için piston baglanti kolundaki (10) yag kanalina (70) yerlestirilen en az bir biyel isi sensörüyle (20.1) sicaklik ölçümü yapabilen ve enerjisini kendi hasat edebilen elektronik devre (40) içeren biyel ölçüm o Makine/motor çalisirken piston (10.1) durumunun anlik takibi için piston (10.1) etegindeki yag kanalina (70) yerlestirilen en az bir piston isi sensörüyle (30.1) sicaklik ölçümü yapabilen ve enerjisini kendi hasat edebilen elektronik devre (40) içeren piston ölçüm kutusu (30), içermesi ile karakterize edilmektedir. Istem 1' e uygun bir piston sicaklik izleme takip sistemi (A) olup, özelligi; yanma odasi ile direk temas halinde olan piston (10.1) kafa kismina sogutma amaciyla giren ve çikan yagin arasindaki sicaklik farkinin anlik hesaplanarak piston (10.1) kafasi sogutma veriminin takip edilmesini saglayan elektronik devre (40) içermesidir. Istem 1 veya istem 2'ye uygun bir piston sicaklik izleme takip sistemi (A) olup, özelligi; bahsedilen elektronik devrenin (40) enerjisini kendi üretebilmesi için en az bir hasat ünitesi (40.6), elde edilen akimin dönüstürülmesi için AC/DC dönüstürücü (40.5), kazanilan enerjiyi düzenleyen regülatör (40.4), regüle edilen enerjiyi batarya gerektirmeksizin depolayabilen güç ünitesi (40.3), verilerin kaydedilerek kontrolü için akilli kartli kontrol ünitesi içeren sensör kümesi (40.2), bahsedilen sensör kümesinden (40.2) elde edilen verinin gömülü bir yazilimla verileri belirli periyotlarda veri merkezine (60) veya bir görüntü aygitina iletmesi için Bluetooth, Wifi gibi kablosuz veri aktarim protokollerinden en az birini barindiran iletisim modülü (40.1) barindiran elektronik devre (40) içermesidir. Istem 1”e uygun bir piston sicaklik izleme takip sistemi (A) olup, özelligi; bahsedilen biyel ölçüm kutusunun (20) ve piston ölçüm kutusunun (30) endüstriyel alanlarda -50 ~ 250 ° santigrat derece araligindaki ölçümlerde kullanilan PT100 türevi sensöre sahip biyel sicaklik sensörü (20.1) ve piston sicaklik sensörü (30.1) içermesidir. . Istem 1”e uygun bir piston sicaklik izleme takip sistemi (A) olup, özelligi; yine piston sicaklik izleme takip sisteminin (A) kontrol ettigi enerji verimliligi prensibiyle belirlenen periyotlarda aktarilarak izlenmesinin, kaydedilmesinin ve erken uyari vermesinin saglandigi, bir görüntüleme sistemi, mobil cihaz, bilgisayar ve/veya bunlardan en az ikisinin kullanilarak olusturuldugu karma bir veri merkezi (60) içermesidir. TR TR TR1.CLAIMS. The invention is a piston temperature monitoring device designed to prevent heat-related malfunctions of each piston (10.1) and piston connecting rod (10), which can be applied to all types of machines/engines containing pistons, especially two- and/or four-stroke heavy-duty machines/engines and generators. It is a tracking system (A) and its feature is; o It can measure the temperature and harvest its own energy with at least one connecting rod temperature sensor (20.1) placed in the oil channel (70) on the piston connecting rod (10) for instant monitoring of the condition of the piston connecting rod (10) and piston rod bearing (10.2) while the machine/engine is running. Connecting rod measurement containing an electronic circuit (40) that can measure the temperature and harvest its own energy with at least one piston temperature sensor (30.1) placed in the oil channel (70) at the skirt of the piston (10.1) for instant monitoring of the piston (10.1) status while the machine/engine is running. It is characterized by containing a piston measuring box (30) containing an electronic circuit (40). It is a piston temperature monitoring system (A) in accordance with Claim 1, and its feature is; It contains an electronic circuit (40) that allows the cooling efficiency of the piston (10.1) head to be monitored by instantly calculating the temperature difference between the oil entering and exiting the piston (10.1) head section, which is in direct contact with the combustion chamber, for cooling purposes. It is a piston temperature monitoring system (A) in accordance with claim 1 or claim 2, and its feature is; At least one harvesting unit (40.6) for the said electronic circuit (40) to produce its own energy, an AC/DC converter (40.5) for converting the obtained current, a regulator (40.4) that regulates the gained energy, a power unit (40.3) that can store the regulated energy without requiring a battery. ), sensor cluster (40.2) containing a smart card control unit for recording and controlling the data, wireless data transfer such as Bluetooth, Wifi to transmit the data obtained from the said sensor cluster (40.2) to the data center (60) or a display device at certain periods with an embedded software. It consists of an electronic circuit (40) containing a communication module (40.1) containing at least one of the protocols. It is a piston temperature monitoring system (A) in accordance with Claim 1, and its feature is; The aforementioned connecting rod measurement box (20) and piston measurement box (30) contain a connecting rod temperature sensor (20.1) and piston temperature sensor (30.1) with a PT100 derivative sensor used in industrial areas for measurements in the range of -50 ~ 250 ° Celsius. . It is a piston temperature monitoring system (A) in accordance with Claim 1, and its feature is; A mixed data center (60) is created using an imaging system, mobile device, computer and/or at least two of these, where the piston temperature monitoring tracking system (A) is controlled by the energy efficiency principle and transferred at specified periods to monitor, record and give early warnings. It contains. TR TR TR
TR2022/009698A 2022-06-10 2022-06-10 Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines TR2022009698A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TR2022/009698A TR2022009698A2 (en) 2022-06-10 2022-06-10 Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2022/009698A TR2022009698A2 (en) 2022-06-10 2022-06-10 Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines

Publications (1)

Publication Number Publication Date
TR2022009698A2 true TR2022009698A2 (en) 2022-07-21

Family

ID=84084180

Family Applications (1)

Application Number Title Priority Date Filing Date
TR2022/009698A TR2022009698A2 (en) 2022-06-10 2022-06-10 Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines

Country Status (1)

Country Link
TR (1) TR2022009698A2 (en)

Similar Documents

Publication Publication Date Title
CN104454231B (en) Stirling engine
CN106840673B (en) Marine diesel slides base bearing pyroelectric signal caliberating device and scaling method
CN105736190B (en) Combustion engine system and method for regulating exhaust gas recirculation therein
WO2007115176A2 (en) Methods and apparatus for operating an internal combustion engine
TR2022009698A2 (en) Piston temperature monitoring system in Two and Four Stroke Internal Combustion Engines/Machines
CN113612296B (en) Two-stage wireless charging device and method for wireless measurement of piston temperature
Daniels et al. The friction behavior of individual components of a spark-ignition engine during warm-up
Foster Innovative rotary displacer Stirling engine: Sustainable power generation for private and fleet vehicle applications
GB2511652A (en) reciprocating heat engine
CN215726427U (en) Piston skirt temperature measuring device
RU2230975C2 (en) Method and device for monitoring sliding bearings of piston machine, mainly internal combustion engine
Mattavi et al. The Stirling engine for underwater vehicle applications
Virsik et al. Free-piston linear generator and the development of a solid lubrication system
CN102678322A (en) Free type piston engine
CN202693311U (en) Valve movement measuring device
Burger et al. The isochoric engine
WO2007115170A2 (en) Methods and apparatus for operating an internal combustion engine
TR2021002478A2 (en) Valve Tracking System in Two and Four Stroke Internal Combustion Engines/Machines
EP3423693A1 (en) Cylinder liner and anti-polishing ring
WO2018074142A1 (en) Stirling engine
WO2022177542A2 (en) Valve monitoring system in two and four stroke internal combustion engines/machines
RU146519U1 (en) TRIBOMETER FOR CYLINDER PISTON GROUP
US11768128B2 (en) Neutronic engine
EP4177455A1 (en) Stirling engine
CN110284965A (en) A kind of engine starting gear