JPS5937440A - Testing method of thermal shock cycle for engine - Google Patents
Testing method of thermal shock cycle for engineInfo
- Publication number
- JPS5937440A JPS5937440A JP14718182A JP14718182A JPS5937440A JP S5937440 A JPS5937440 A JP S5937440A JP 14718182 A JP14718182 A JP 14718182A JP 14718182 A JP14718182 A JP 14718182A JP S5937440 A JPS5937440 A JP S5937440A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- temperature
- oil
- llc
- coolant
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Engines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はエンジンの評価試験法、特に寒冷地走行を想定
したエンジンの冷熱サイクル試験に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an evaluation test method for an engine, and particularly to a thermal cycle test for an engine assuming driving in a cold region.
寒冷地では一り０℃〜＝ＩＪＯ℃番こ車両を放置してお
いたのち、高速道路を高速走行しその後また低温下に放
置するといったパターンで繰返し使用されている。この
場合、エンジンには大きなサーマルシロツクを与えるこ
とになる。これによりガスケットなどのシール部が熱に
より伸縮を繰返し、ＬＬＣ洩れ、オイル洩れの発生原因
となっている。In cold regions, vehicles are left at 0°C to IJO°C for a while, then driven on highways at high speeds, and then left at low temperatures again. In this case, a large thermal lock will be applied to the engine. This causes seal parts such as gaskets to expand and contract repeatedly due to heat, causing LLC leakage and oil leakage.
従来上記の様な車両使用状態における厳しい環境条件を
社内のベンチ試験で再現するためには。In order to reproduce the harsh environmental conditions under which vehicles are used, such as those described above, through in-house bench tests.
低温室にＬＬＣ冷却装置とオイル冷却装置を装備し低温
下で規定の冷熱サイクルパターンで試験していた。The cold room was equipped with an LLC cooling device and an oil cooling device, and tests were conducted under a specified cooling/heating cycle pattern at low temperatures.
この様な試験法では。With this kind of test method.
■ 低温室を使った試験は非常にコスト高である。■ Testing using a cold room is extremely expensive.
■ 試験のために低温室に入退室すると気温差が大きく
、試験員の体調管理基こ十分な配慮が必要となる。■ There is a large difference in temperature when entering and exiting a cold room for testing, so careful consideration must be given to examiners' physical condition management.
などの問題があった。There were other problems.
本発明者らは従来の試験番とおいて、冷サイクル時にエ
ンジンを冷却するのは低温室の空気よりもむしろエンジ
ン停止途上で循環される冷えたＬＬＣとオイルであるこ
とを発見した。In a conventional test series, the inventors discovered that during the cold cycle, it was the cold LLC and oil that was circulated during the engine shutdown that cooled the engine during the cold cycle, rather than the air in the cold room.
このことは常温において、冷えたＬＬＣ及びオイルを強
制循環した場合のエンジンブｏ−）りの壁温を測定した
結果が低温室試験時と同等の温度まで冷却されており、
従ってサーマルシラツクも同等であることがうかがわれ
る。This means that when cold LLC and oil are forced to circulate at room temperature, the wall temperature of the engine boot is cooled to the same temperature as during the cold room test.
Therefore, it seems that thermal silicone is also equivalent.
そこで本発明の目的は、常温のもとてエンジンに対し寒
冷地の自然条件と同等のサーマルシラツクを与えるエン
ジンの冷熱サイクル試験方法の提供にある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an engine cooling/heating cycle test method that provides a thermal shock to the engine at room temperature that is equivalent to the natural conditions in a cold region.
かかる目的はエンジンの冷熱サイクル試験において、高
温サイクル時にはエンジンの焼付防止のためＬＬＣ及び
オイルを高温ＬＬＣ制御装置及び高温オイル制御装置に
よって高温状態に保持してエンジンに供給して運転し、
低温サイクル時には。This purpose is to maintain the LLC and oil at a high temperature by a high temperature LLC control device and a high temperature oil control device and supply the engine to the engine during high temperature cycles to prevent engine seizure during a high temperature cycle test.
during low temperature cycles.
エンジンを停止状態で冷却するためにＬＬＣ冷却装置及
びオイル冷却装置を用いて冷却したＬＬＣ。LLC cooled using an LLC cooling system and an oil cooling system to cool the engine at standstill.
オイ）Ｌｔ ヲｚンジンに強制供給し、かつエンジンを
除湿した空気でシールドさせて寒冷地の運転条件をシミ
ュレーションしたエンジンの冷熱サイクル試験方法によ
って達成される。This is achieved by an engine cooling/heating cycle test method that simulates operating conditions in cold regions by forcibly supplying air to the Lt engine and shielding the engine with dehumidified air.
ナオ、低温すイクル時に除湿した空気でエンジンをシー
ルドするのは、常温雰囲気でエンジンを冷却することに
より空気中の湿分がエンジン表面で結露又は結氷するの
を防止するためである。The reason why the engine is shielded with dehumidified air during low-temperature cruising is to prevent moisture in the air from condensing or freezing on the engine surface by cooling the engine at room temperature.
以下回向に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on the following.
第１図に示す様にエンジン１と該エンジン１の出力を吸
収する動力計２を接続し１例えば第２Ｎｉこポス様なパ
ターンでエンジンｌの運転・停止を繰返す冷熱サイクル
テストにおいて、まず低温サイクルでは該エンジン１は
停止した状態でＬＬＣ系は弁ｉｌｌが閉じ弁１８が開い
てＬ Ｌ Ｃ冷却袋Ｒ１を使い冷却する。As shown in Figure 1, an engine 1 is connected to a dynamometer 2 that absorbs the output of the engine 1, and in a cold/hot cycle test in which the engine 1 is repeatedly operated and stopped in a pattern similar to, for example, a second Ni Then, with the engine 1 stopped, the LLC system is cooled using the LLC cooling bag R1 with the valve ill closed and the valve 18 opened.
ＬＬＣ冷却装置４はポンプ８と冷却器９とがらなり、こ
の冷却器９は一１ＩＯ℃程度まで冷却させるため冷凍機
１６に接続されており直膨式のＬＬＣの冷却器になって
いる。一方、エンジンオイル系は弁１５が閉じ弁１つが
開いてオイル冷却装置６を使い（３）
冷却する。エンジンオイル冷却装置６もポンプ１２と直
膨式の冷却器１うから成り立っている。そして該冷却器
１３は低温の高粘度のオイルを効率的に冷却するためス
クリュウコンベアの様な機構となっている。また、ＬＬ
Ｃ冷却装置社もオイル冷却装置６も操作及び制御の容易
さを目的としてタンク又はバイパス弁等を設ける場合も
ある。The LLC cooling device 4 consists of a pump 8 and a cooler 9, and the cooler 9 is connected to a refrigerator 16 for cooling to about -1IO° C., and is a direct expansion type LLC cooler. On the other hand, the engine oil system is cooled using the oil cooling device 6 (3) with the valve 15 closed and one valve opened. The engine oil cooling device 6 also includes a pump 12 and a direct expansion type cooler 1. The cooler 13 has a screw conveyor-like mechanism to efficiently cool the low-temperature, high-viscosity oil. Also, LL
Both the C cooling equipment company and the oil cooling equipment 6 may be provided with a tank or a bypass valve for the purpose of ease of operation and control.
次に、高温サイクルではエンジン１は回転し。Next, in the high temperature cycle, the engine 1 rotates.
アイドルから全負荷・最高速で運転する。この時。Run from idle to full load and maximum speed. At this time.
ＬＬＣ系は弁ｉｌｌを開き弁１８を閉じて高温オイル制
御装置うを用い高温時のオイルコントロールを行なう。The LLC system opens valve ill and closes valve 18 to control oil at high temperatures using a high temperature oil control device.
この高温ＬＬＣ制御装置５は冷却器７でＬＬＣと冷却水
とで熱交換し温度フントロールする。This high-temperature LLC control device 5 uses a cooler 7 to exchange heat between the LLC and cooling water to control the temperature.
一方エンジンオイル系は弁１５を開き弁１つを閉じて高
温オイル制御装置５を使い高温時のコントロールを行な
う。該高温オイル制御装置５はポンプＩＯと冷却器１１
とからなる。なお冷却器７，１１については冷却水路は
図示していない。On the other hand, the engine oil system is controlled at high temperatures using the high temperature oil control device 5 by opening the valve 15 and closing one valve. The high temperature oil control device 5 includes a pump IO and a cooler 11.
It consists of Note that cooling water channels for the coolers 7 and 11 are not shown.
常温における室内でエンジン１を−３０℃近くまで冷却
すると空気中の湿分がエンジン表面で結露（４）
又は結氷し電気系のトラブルが発止するため、除湿器１
７を用い乾燥空気でエンジンをシールドする。If the engine 1 is cooled indoors at room temperature to around -30°C, the moisture in the air will condense (4) or freeze on the engine surface, causing electrical problems.
7 and shield the engine with dry air.
以上より明らかな様番こ１本発明番こよれば。From the above, it is clear that the present invention is as follows.
■ 常温において、エンジンが寒冷地でうけるのと同等
のサーマルシラツクをエンジン番こ与えることができる
。■ At room temperature, it is possible to provide the engine with the same amount of thermal shock that the engine receives in cold regions.
■ 低温室試験時こ比べ試験が格段の低コストである。■ The cost of testing is much lower than that of cold room testing.
■ 低温室試験に比べ少ないエネルギーで実験が可能と
なる。■ Experiments can be performed using less energy than cold room tests.
■ 常温下で冷熱サイクル試験ができるため。■ Cooling and heating cycle tests can be performed at room temperature.
作業性がよく冷房病にもならない。Works well and does not cause air conditioning sickness.
という利点がある。There is an advantage.
第１図は本発明試験方法実施に用いるシステムフローチ
ャートを示し、第２図は冷熱サイクル試験の試験パター
ンの一例を示す。
１・・・エンジン、２・・・動力計、３・−・高温ＬＬ
Ｃ制御装置、１１・・・ＬＬＣ冷却装置、５・−高温オ
イル制御装置、６・・・オイル冷却装置、 ７．９．１
１・・・冷却器、 ｌ’Ｊ 、 １．０．１２・・・ポ
ンプ、１う・・・直膨式冷却器、１６・・・冷凍器、
ＩＬ １５． ＩＬ １９・・・弁、１７・・−除湿器
特許出願人
トヨタ自動車株式会社
代表者森田俊夫
（７）
第 １ 関
１’？FIG. 1 shows a system flowchart used to carry out the test method of the present invention, and FIG. 2 shows an example of a test pattern for a thermal cycle test. 1... Engine, 2... Dynamometer, 3... High temperature LL
C control device, 11... LLC cooling device, 5.-high temperature oil control device, 6... oil cooling device, 7.9.1
1... Cooler, l'J, 1.0.12... Pump, 1... Direct expansion cooler, 16... Freezer,
IL 15. IL 19... Valve, 17... - Dehumidifier patent applicant Toyota Motor Corporation Representative Toshio Morita (7) No. 1 Seki 1'?
Claims (1)
には、エンジンの冷却剤（以下、ＬＬＣという）及びオ
イルを高温状態に保持しエンジンに供給して運転し、低
温サイクル時には、該エンジンを停止状態で冷却するた
めにＬＬＣ冷却装置及びオイル冷却装置を用いて冷却し
たＬＬＣ及びオイルをエンジンに強制供給し、かつ低温
冷却時にエンジン表面で結露・結氷を発生せしめない程
度に該エンジン周囲の湿度を低下させろことからなる。 寒冷地の運転条件をシミュレーションできることを特徴
としたエンジンの冷熱サイクル試験方法。[Claims] In an engine cold/heat cycle test, during a high temperature cycle, engine coolant (hereinafter referred to as LLC) and oil are maintained at a high temperature and supplied to the engine for operation, and during a low temperature cycle, the engine is operated. In order to cool the engine while it is stopped, the LLC and oil cooled using the LLC cooling device and the oil cooling device are forcibly supplied to the engine, and the humidity around the engine is maintained to such an extent that dew condensation and ice do not form on the engine surface during low-temperature cooling. It consists of lowering the A thermal cycle test method for engines that is characterized by its ability to simulate operating conditions in cold regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14718182A JPS5937440A (en) | 1982-08-25 | 1982-08-25 | Testing method of thermal shock cycle for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14718182A JPS5937440A (en) | 1982-08-25 | 1982-08-25 | Testing method of thermal shock cycle for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5937440A true JPS5937440A (en) | 1984-02-29 |
| JPH0216990B2 JPH0216990B2 (en) | 1990-04-19 |
Family
ID=15424408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14718182A Granted JPS5937440A (en) | 1982-08-25 | 1982-08-25 | Testing method of thermal shock cycle for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5937440A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6112040U (en) * | 1984-06-28 | 1986-01-24 | トヨタ自動車株式会社 | Engine thermal testing equipment |
| JPS62293138A (en) * | 1986-06-12 | 1987-12-19 | Toyo Eng Works Ltd | Cooling device for engine low-temperature start test |
| JPS62293137A (en) * | 1986-06-12 | 1987-12-19 | Toyo Eng Works Ltd | Cooling device for engine low-temperature start test |
| JPS635233A (en) * | 1986-06-25 | 1988-01-11 | Toyo Eng Works Ltd | Cooling apparatus for low temperature starting test of engine |
| JPS6338877A (en) * | 1986-08-01 | 1988-02-19 | 株式会社東洋製作所 | Cooling device |
| EP0857958A1 (en) * | 1997-02-10 | 1998-08-12 | Angelantoni Industrie SpA | System for the rapid cooling of engines on a test bench and relative device |
| KR100448390B1 (en) * | 2002-09-05 | 2004-09-10 | 현대자동차주식회사 | Thermal shock test controlling method of engine |
| DE10349700B3 (en) * | 2003-10-24 | 2005-05-04 | Daimlerchrysler Ag | Thermoshock testing method for automobile engine exhaust manifold using simulated cylinder head for supplying exhaust manifold with heated pressurized air |
| JP2007198516A (en) * | 2006-01-27 | 2007-08-09 | Honda Motor Co Ltd | Centrifugal clutch |
| CN102706561A (en) * | 2012-05-30 | 2012-10-03 | 长城汽车股份有限公司 | Test device for verifying cold and heat cycle performance of engine radiator |
| CN105067270A (en) * | 2015-08-28 | 2015-11-18 | 中国重汽集团济南动力有限公司 | Engine test system |
| US9611904B2 (en) | 2010-01-27 | 2017-04-04 | Kabushiki Kaisha F.C.C. | Centrifugal clutch apparatus |
| CN111521403A (en) * | 2020-05-06 | 2020-08-11 | 河南柴油机重工有限责任公司 | Automatic load regulation control method and system for cold and hot shock test of diesel engine |
| CN113310694A (en) * | 2021-04-22 | 2021-08-27 | 中国地质大学（武汉） | Cold and hot impact test system for engine |
| KR20220028412A (en) * | 2020-08-28 | 2022-03-08 | 한화시스템 주식회사 | Test apparatus and test method |
-
1982
- 1982-08-25 JP JP14718182A patent/JPS5937440A/en active Granted
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6112040U (en) * | 1984-06-28 | 1986-01-24 | トヨタ自動車株式会社 | Engine thermal testing equipment |
| JPS62293138A (en) * | 1986-06-12 | 1987-12-19 | Toyo Eng Works Ltd | Cooling device for engine low-temperature start test |
| JPS62293137A (en) * | 1986-06-12 | 1987-12-19 | Toyo Eng Works Ltd | Cooling device for engine low-temperature start test |
| JPH0554903B2 (en) * | 1986-06-12 | 1993-08-13 | Toyo Seisakusho Kk | |
| JPS635233A (en) * | 1986-06-25 | 1988-01-11 | Toyo Eng Works Ltd | Cooling apparatus for low temperature starting test of engine |
| JPS6338877A (en) * | 1986-08-01 | 1988-02-19 | 株式会社東洋製作所 | Cooling device |
| EP0857958A1 (en) * | 1997-02-10 | 1998-08-12 | Angelantoni Industrie SpA | System for the rapid cooling of engines on a test bench and relative device |
| US5915343A (en) * | 1997-02-10 | 1999-06-29 | Angelantoni Industrie Spa | System for the rapid cooling of engines on a test bench and relative device |
| KR100448390B1 (en) * | 2002-09-05 | 2004-09-10 | 현대자동차주식회사 | Thermal shock test controlling method of engine |
| DE10349700B3 (en) * | 2003-10-24 | 2005-05-04 | Daimlerchrysler Ag | Thermoshock testing method for automobile engine exhaust manifold using simulated cylinder head for supplying exhaust manifold with heated pressurized air |
| JP2007198516A (en) * | 2006-01-27 | 2007-08-09 | Honda Motor Co Ltd | Centrifugal clutch |
| US9611904B2 (en) | 2010-01-27 | 2017-04-04 | Kabushiki Kaisha F.C.C. | Centrifugal clutch apparatus |
| CN102706561A (en) * | 2012-05-30 | 2012-10-03 | 长城汽车股份有限公司 | Test device for verifying cold and heat cycle performance of engine radiator |
| CN105067270A (en) * | 2015-08-28 | 2015-11-18 | 中国重汽集团济南动力有限公司 | Engine test system |
| CN111521403A (en) * | 2020-05-06 | 2020-08-11 | 河南柴油机重工有限责任公司 | Automatic load regulation control method and system for cold and hot shock test of diesel engine |
| KR20220028412A (en) * | 2020-08-28 | 2022-03-08 | 한화시스템 주식회사 | Test apparatus and test method |
| CN113310694A (en) * | 2021-04-22 | 2021-08-27 | 中国地质大学（武汉） | Cold and hot impact test system for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0216990B2 (en) | 1990-04-19 |
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