US3583375A - Air compression four-cycle piston combustion engine - Google Patents
Air compression four-cycle piston combustion engine Download PDFInfo
- Publication number
- US3583375A US3583375A US830386A US3583375DA US3583375A US 3583375 A US3583375 A US 3583375A US 830386 A US830386 A US 830386A US 3583375D A US3583375D A US 3583375DA US 3583375 A US3583375 A US 3583375A
- Authority
- US
- United States
- Prior art keywords
- cylinder
- exhaust gases
- combustion engine
- conduit
- inlet port
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B47/00—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines
- F02B47/04—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only
- F02B47/08—Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines the substances being other than water or steam only the substances including exhaust gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- Burns Attorney-Walter Becker ABSTRACT An air compressing four-stroke cycle piston internal combustion engine in which exhaust gas is admixed to the combustion air taken into the cylinder means of the engine and in which during and preferably toward the end of the intake stroke of the respective cylinder means a time cross section is freed for the admittance of exhaust gas into the respective cylinder means.
- the present invention relates to an air compression fourcycle-piston combustion engine with the admixture of exhaust gas and combustion air.
- a problem not yet satisfactorily solved consists in the realization of the admixture in practice.
- Two fundamentally different ways of solving this problem have heretofore been selected.
- One way consists in throttling the exhaust gas flow, mostly by means of a flap, and it is taken for granted that during the time during which customarily with each four-stroke cycle piston internal combustion engine the opening periods of the inlet and outlet valve overlap, a part of the previously exhausted exhaust gas will flow back into the area in view of the pressure drop toward the area which pressure drop has been brought about by throttling in the exhaust conduit.
- This type of returning exhaust gases has, however, considerable drawbacks.
- the suction conduit especially in the partial load area, where the admixture of exhaust gases is preferable, an air-exhaust gas mixture is obtained so that during a sudden switching from partial load to full load, still some combustion occurs due to lack of air, and the engine will show a certain sluggishness.
- a similar effect is also obtained in particular during a longer partial load operation and the considerable heating up of the suction line inherent thereto.
- the strong soiling of the suction line and the fact that the entire admixture system with its frequently very long conduits has to be insulated carefully against heat radiation represents a further undesirable feature.
- FIG. 1 illustrates by way of a graph the control course of a four-cycle piston internal combustion engine in which the exhaust gas to be admixed to the internal combustion air is returned through the outlet valve of each cylinder.
- HO. 2 diagrammatically illustrates a section through a fourcycle piston internal combustion engine in which the return of the exhaust gases is effected by piston controlled passages in the cylinder.
- FIG. 3 is a section taken along the line Ill-Ill of FIG. 2.
- FIG. 4 diagrammatically illustrates an internal combustion engine with a throttle flap in the exhaust conduit and. a device for adjusting the throttle in conformity with the respective load.
- the problem outlined above has been solved in conformity with the present invention by the fact that during, preferably toward the end of, the suction stroke of the working cylinder or cylinders, a time period is permitted for the transfer of exhaust gases directly into the working cylinder or cylinders.
- the freeing of the time cross section for the return of the exhaust gases is, in conformity with the present invention, effected at a time at which already a considerable quantity of combustion air will be present in the respective working cylinder so that no longer any danger exists that returned exhaust gases will escape into the suction conduit.
- the pressure drop necessary for returning the exhaust gases may be kept relatively small because for the intake of the exhaust gases a longer time period can be made available than is available with the customary valve overlap.
- the later admixture is more advantageous insofar as the contact time of the exhaust gases with the fresh air is less so that the ignition accelerating and chemically active ingredients contained in the exhaust gases will have no opportunity to lose materially as to their effectiveness during too long a contact with fresh air.
- the direct feeding of the exhaust gases into the cylinder within the framework of the present invention may be effected according to the following two propositions.
- the time cross section (Zeitquerites) to be made available in conformity with the present invention is freed by once more opening the outlet valve at an appropriate time.
- the other proposition consists in providing one or a plurality of exhaust gas feeding passages which are at an appropriate time opened up by corresponding working pistons. If the last-mentioned proposition is employed with a piston internal combustion engine in the working cylinder or cylinders in which the combustion air has a twist about the longitudinal axis of the cylinder toward the end of the suction stroke, it is advantageous to design the exhaust gas feeding so that they will aid in the generation of a twist.
- the generation of the pressure drop between the exhaust gas conduit and the working cylinder as it is necessary for the return of the exhaust gas may be effected either by throttling the exhaust gases or by throttling in the intake conduit.
- a highly advantageous suggestion according to the invention with regard to the control consists, according to a further development of the invention, in effecting the control of the admixture of exhaust gases to the combustion air in direct conformity with the respective injected quantity of fuel.
- the fuel injection pump may be equipped with an additional pump element the delivery of which, which changes in conformity with the fuel delivery injected into each working cylinder, is used for actuating the element which controls the admixture of exhaust gases. It is advisable to dampen the movements of the control member, preferably hydraulically, to such an extent that between two successive strokes of the control no or no material return of the control member is effected.
- FIG. 1 illustrates the valve lifting curves of a four-stroke cycle piston internal combustion engine in the exhaust conduit of which the exhaust gases are choked by a throttle valve or throttle flap.
- the ordinary discharge valve lifting curve which starts shortly prior to the lower dead center point, i.e. shortly prior to the completion of the power stroke, has been designated with the letter a whereas the valve lifting curve of the inlet valve has been designated with the letter b.
- the outlet valve which as is customary closes shortly after the lower dead center point, i.e. after the suction stroke has started, opens, in conformity with the present invention, a second time shortly prior to the lower dead center point, i.e.
- the back flowing quantity is dependent on the magnitude of the choking pressure and the extent of the free time cross section.
- the working cylinder 1 has reciprocably mounted therein a piston 2 and is provided with an inlet valve 3 having adjacent thereto the suction conduit 5 and with an outlet valve 45 having adjacent thereto the discharge conduit 7.
- the intake conduit 5 has interposed therein an air filter 6.
- lnterposed in said discharge conduit 7 is an accumulator 8 while a throttle valve or throttle flap 9 is arranged in the discharge conduit section 7a.
- a conduit Ml branches off from the discharge conduit 7 and leads to an annular chamber lll surrounding the cylinder 2.
- Passages 12 of rectangular cross section lead from the interior of the annular chamber 11 into the cylinder 1.
- passages 12 are so arranged with regard to the piston movement that they are freed by the piston 2 shortly prior to the completion of the suction stroke so that exhaust gas choked or accumulated in the discharge conduit 7 ahead of the throttle valve 9 will be moved into the cylinder chamber.
- the passages 12 have, as indicated in FIG. 3, been so positioned as to aid in the formation of the twist or whirl.
- the three-cylinder four-stroke cycle piston internal combustion engine has been designated with the reference numeral 13.
- the engine is provided with a fuel injection pump 15 adapted to be driven by means of an auxiliary shaft 14.
- the discharge conduit of engine 13 is designated with the reference numeral 16.
- a throttle valve 17 is arranged in the discharge conduit 16 and is adjusted in conformity with the respective load. A portion of the exhaust gas accumulated or choked ahead of said throttle valve 17 is, but not shown in the drawing, returned into the cylinder by the discharge valve or valves which near the end of the intake stroke opens or open shortly once more.
- the load-dependent adjustment of the throttle valve 17 is effected in the following manner.
- the fuel injection purn 15 is equipped with a fourth pump element which delivers t rough a conduit 18 into the working chamber 19 of a piston 21 which is biased by a spring 20.
- a conduit 23 connected to the working chamber 19 of this piston is a conduit 23 controlled by a throttle 22 and connected to the suction side of the fuel injection pump 15.
- a relief conduit 24l of the spring chamber pertaining to piston 21 leads into the conduit 23 behind the throttle 22.
- Piston 21 is adapted through the intervention of a rod 25, a joint 26 and a lever 27 to adjust the throttle valve 17 in conformity with the changes in the delivery of the fourth pump element and thereby also in conformity with the changes of the fuel injection pump elements proper. Any material return of the throttle valve 17 between each two strokes of the actuating pump is prevented by a hydraulic damping device 28 which is connected to a lever 27.
- An air compressing four-stroke cycle piston internal combustion engine which includes: cylinder means having inlet valve means and outlet valve means, inlet manifold means leading to said inlet valve means, outlet manifold means communicating with said outlet valve means for discharging exhaust gases discharged through said outlet valve means, said cylinder means being provided with inlet port means spaced from said outlet valve means in the axial direction of said cylinder means, adjustable throttle means interposed in said outlet manifold means for controlling the quantity of exhaust gases passing from said outlet manifold means to and through said inlet port means, conduit means leading from said outlet manifold means into said inlet port means, piston means reciprocable in said cylinder means and operable to control said inlet port means to permit exhaust gases from said conduit means to enter said cylinder means when said piston means during an exhaust stroke frees said inlet port means, and pump means for delivering fuel to said cylinder means and means responsive to the delivery of said pump means and operatively connected to said throttle means for controlling the latter in conformity with the delivery of said pump means.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Reciprocating Pumps (AREA)
- Valve Device For Special Equipments (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1751473A DE1751473C3 (de) | 1968-06-05 | 1968-06-05 | Viertakt-Kolbenbrennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
US3583375A true US3583375A (en) | 1971-06-08 |
Family
ID=5692317
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US830386A Expired - Lifetime US3583375A (en) | 1968-06-05 | 1969-06-04 | Air compression four-cycle piston combustion engine |
Country Status (4)
Country | Link |
---|---|
US (1) | US3583375A (de) |
DE (1) | DE1751473C3 (de) |
FR (1) | FR2010506A1 (de) |
GB (1) | GB1275624A (de) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3702111A (en) * | 1970-02-19 | 1972-11-07 | John Harold Weaving | Atmospheric pollution control arrangement for internal combustion engine |
US3703164A (en) * | 1970-02-19 | 1972-11-21 | British Leyland Motor Corp | Atmospheric pollution control arrangement for internal combustion engine |
JPS4848832A (de) * | 1971-10-21 | 1973-07-10 | ||
US3799130A (en) * | 1971-06-21 | 1974-03-26 | K Dahlstrom | Internal combustion engine |
US3875914A (en) * | 1973-01-11 | 1975-04-08 | Tony R Villella | Internal combustion engine |
US3905344A (en) * | 1973-04-23 | 1975-09-16 | Tony R Villella | Internal combustion engine |
US4043304A (en) * | 1973-05-02 | 1977-08-23 | Robert Bosch Gmbh | Fuel injection system for self-igniting internal combustion engines |
US4108119A (en) * | 1977-01-19 | 1978-08-22 | Mcwhorter Edward Milton | Bottom cycle manifold for four-stroke internal combustion engines |
US4191150A (en) * | 1978-03-20 | 1980-03-04 | General Motors Corporation | Engine with selective venting of unburned mixture from the piston crevice volume |
US4344405A (en) * | 1980-12-22 | 1982-08-17 | Zaharis Edward J | Internal combustion engine |
US20150330333A1 (en) * | 2012-12-21 | 2015-11-19 | Caterpillar Energy Solutions Gmbh | Unburned fuel venting in internal combustion engines |
US9694671B2 (en) * | 2013-12-05 | 2017-07-04 | Oshkosh Corporation | Fuel system for a vehicle |
US11521385B2 (en) | 2018-04-23 | 2022-12-06 | Oshkosh Corporation | Refuse vehicle control system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2321970C2 (de) * | 1973-05-02 | 1985-09-12 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage für eine Brennkraftmaschine |
FR2448032A1 (fr) * | 1979-02-05 | 1980-08-29 | Semt | Procede pour ameliorer le rendement d'un moteur a combustion interne notamment suralimente |
US4393853A (en) * | 1981-08-06 | 1983-07-19 | Research Corporation | Exhaust gas recirculation type internal combustion engines and method of operating same |
JPS5918230A (ja) * | 1982-07-21 | 1984-01-30 | Kanesaka Gijutsu Kenkyusho:Kk | 低圧縮比タ−ボ過給圧縮着火エンジン |
AT402432B (de) * | 1988-02-25 | 1997-05-26 | Avl Verbrennungskraft Messtech | Brennkraftmaschine |
DE4203365C1 (de) * | 1992-02-06 | 1993-02-11 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE102015110558B4 (de) | 2015-07-01 | 2022-10-06 | Volkswagen Aktiengesellschaft | Brennkraftmaschine |
FR3115167A1 (fr) | 2020-10-14 | 2022-04-15 | Nidec Psa Emotors | Rotor de machine électrique tournante |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1329811A (en) * | 1918-07-17 | 1920-02-03 | John W Smith | Internal-combustion engine |
US1825817A (en) * | 1926-11-15 | 1931-10-06 | Walker Brooks | Stratifying arrangement for internal combustion engines |
US1833802A (en) * | 1926-08-17 | 1931-11-24 | Violet Marcel Achille | Explosion engine |
-
1968
- 1968-06-05 DE DE1751473A patent/DE1751473C3/de not_active Expired
-
1969
- 1969-04-30 FR FR6913875A patent/FR2010506A1/fr not_active Withdrawn
- 1969-06-03 GB GB28060/69A patent/GB1275624A/en not_active Expired
- 1969-06-04 US US830386A patent/US3583375A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1329811A (en) * | 1918-07-17 | 1920-02-03 | John W Smith | Internal-combustion engine |
US1833802A (en) * | 1926-08-17 | 1931-11-24 | Violet Marcel Achille | Explosion engine |
US1825817A (en) * | 1926-11-15 | 1931-10-06 | Walker Brooks | Stratifying arrangement for internal combustion engines |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3702111A (en) * | 1970-02-19 | 1972-11-07 | John Harold Weaving | Atmospheric pollution control arrangement for internal combustion engine |
US3703164A (en) * | 1970-02-19 | 1972-11-21 | British Leyland Motor Corp | Atmospheric pollution control arrangement for internal combustion engine |
US3799130A (en) * | 1971-06-21 | 1974-03-26 | K Dahlstrom | Internal combustion engine |
JPS4848832A (de) * | 1971-10-21 | 1973-07-10 | ||
US3875914A (en) * | 1973-01-11 | 1975-04-08 | Tony R Villella | Internal combustion engine |
US3905344A (en) * | 1973-04-23 | 1975-09-16 | Tony R Villella | Internal combustion engine |
US4043304A (en) * | 1973-05-02 | 1977-08-23 | Robert Bosch Gmbh | Fuel injection system for self-igniting internal combustion engines |
US4108119A (en) * | 1977-01-19 | 1978-08-22 | Mcwhorter Edward Milton | Bottom cycle manifold for four-stroke internal combustion engines |
US4191150A (en) * | 1978-03-20 | 1980-03-04 | General Motors Corporation | Engine with selective venting of unburned mixture from the piston crevice volume |
US4344405A (en) * | 1980-12-22 | 1982-08-17 | Zaharis Edward J | Internal combustion engine |
US20150330333A1 (en) * | 2012-12-21 | 2015-11-19 | Caterpillar Energy Solutions Gmbh | Unburned fuel venting in internal combustion engines |
US10041438B2 (en) * | 2012-12-21 | 2018-08-07 | Caterpillar Energy Solutions Gmbh | Unburned fuel venting in internal combustion engines |
US9694671B2 (en) * | 2013-12-05 | 2017-07-04 | Oshkosh Corporation | Fuel system for a vehicle |
US11027606B2 (en) | 2013-12-05 | 2021-06-08 | Oshkosh Corporation | Fuel system for a vehicle |
US11707978B2 (en) | 2013-12-05 | 2023-07-25 | Oshkosh Corporation | Fuel system for a vehicle |
US11521385B2 (en) | 2018-04-23 | 2022-12-06 | Oshkosh Corporation | Refuse vehicle control system |
Also Published As
Publication number | Publication date |
---|---|
DE1751473C3 (de) | 1974-04-25 |
DE1751473A1 (de) | 1970-10-22 |
GB1275624A (en) | 1972-05-24 |
FR2010506A1 (de) | 1970-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3583375A (en) | Air compression four-cycle piston combustion engine | |
US2817322A (en) | Supercharged engine | |
US2221405A (en) | Internal combustion engine | |
US3266234A (en) | Compression ignition engine and method of operating same | |
US4506633A (en) | Internal combustion engine | |
US4722315A (en) | Method for improved internal exhaust gas recirculation in an internal combustion engine | |
US20080201058A1 (en) | Internal combustion engine and working cycle | |
US4228772A (en) | Low throttled volume engine | |
US3990413A (en) | Fuel injection system for single or multiple cylinder internal combustion engines | |
CA1253759A (en) | Idle fuel residual storage system | |
GB1568307A (en) | Additional charge of a diesel internal-combustion engine | |
GB1598521A (en) | Internal combustion engine | |
US4318380A (en) | Intake system for multi-cylinder internal combustion engine | |
US4671218A (en) | Two stroke engine with deflector valve | |
US3896775A (en) | Supercharged six-stroke cycle combustion engine | |
GB1173257A (en) | Internal Combustion Engine Fuel Feed System | |
US2319773A (en) | Control device | |
US2599908A (en) | Internal-combustion engine | |
US2789547A (en) | Supercharged gasoline engine | |
US2542707A (en) | Internal-combustion engine operating on the two-stroke cycle with compression ignition | |
US3792691A (en) | Air cooled antipollution engine | |
US2094828A (en) | Two-stroke cycle engine | |
JP2966008B2 (ja) | エンジンの過給装置 | |
US2126483A (en) | Internal combustion engine | |
US2110888A (en) | Internal combustion engine |