US3799301A - Method and apparatus for engine operation - Google Patents
Method and apparatus for engine operation Download PDFInfo
- Publication number
- US3799301A US3799301A US00294952A US29495272A US3799301A US 3799301 A US3799301 A US 3799301A US 00294952 A US00294952 A US 00294952A US 29495272 A US29495272 A US 29495272A US 3799301 A US3799301 A US 3799301A
- Authority
- US
- United States
- Prior art keywords
- air
- engine
- pressure
- air pump
- canister
- 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
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Classifications
-
- 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
- F02M23/00—Apparatus for adding secondary air to fuel-air mixture
- F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0606—Fuel temperature
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S60/00—Power plants
- Y10S60/90—Excess air to internal combustion engine to assist exhaust treatment
Definitions
- the apparatus may divert air from an air injection system to the intake manifold below the carburetor throttle plate under predetermined conditions so that the air-fuel ratio is leaned out. This allows less combustibles to enter the emssion control system and thereby lowers reaction temperatures and improves fuel economy.
- the method and apparatus for sensing the engine speed or load condition is also novel and includes sensing the pressure of the air supplied by the air pump on an engine to obtain a signal indicating the operating condition of an engine, including engine speed and load. Air under pressure from the air pump is connected to lean out the fuel-air mixture supplied by the carburetor to the engine when an air pump pressure is sensed which provides an indication of a predetermined engine speed and/or load. The sensing of the air pressure may be inhibited in response to a predetermined low throttle setting. The highest engine speed-load signal sensed may be stored and the magnitude of the stored signal reduced in response to application of braking to the vehicle.
- a still further object of this invention is to provide an improved method and apparatus for normalizing exhaust system temperatures during normal high engine load conditions, thereby lowering emission control device temperatures and improving fuel economy.
- the flow of air through the connecting means from the air pump is enabled.
- the flow of air through the connecting means is increased an amount related to an increasein engine speed-load signal above the predetermined engine speed-load signal which enables the initiation of flow through the connecting means.
- Means are further provided for delaying application of the pressure build up by the air pump to the air pressure sensing system during an acceleration.
- a restrictive orifice element may be connected between the air pressure sensing system and the output of the air pump to provide the delay of the pressure build up and also to reduce the effect of transient changes in air pump output in response to changes between acceleration, cruising and deceleration.
- the air pressure sensing means may also include canister means connected to be pressurized by output air from the air pump to provide an indication of engine speed and load.
- the restricted orifice element may be connected intermediate the air pump output and the canister means to reduce transient effects and to delay pressurization as discussed hereinbefore.
- the canister means is preferably divided into first and second portions by means including a check valve, which enables a first portion to receive pressurization from the air pump and a second portion to be pressurized from the first portion via the check valve to store and retain air under a pressure related in magnitude to the highest engine speed-load combination sensed.
- the output pressure of the air pump AP and the conduit CD1 is sensed by providing a bleed conduit CD2 connected to the conduit CD1 by a tee connection Tl.
- An adjustable needle valve NVl bleeds air pressure from the conduit CD1 to a canister means CANl.
- the canister means CAN] is preferably divided into a first portion VOLl and a second portion VOL2.
- the first and second portions are preferably connected by a conduit CD4 which includes a check valve VCK to prevent air from flowing from the portion VOL2 back to the portion VOLl.
- the output of the canister means CANl is connected via a conduit CD5 to a pressure responsive actuating means ATC.
- the conduit CD6 acts as a connecting means between the main supply conduit CD1 through a tee connection T4 and an intake manifold [M of the internal combustion engine.
- a carburetor CB controls the flow of a mixture of fuel and air by opening and closing a throttle plate TP located in the throat thereof.
- the first portion VOLl of the canister means CANl may be vented to the atmosphere via a solenoid controlled valve SVl located in a conduit CD3 which is connected into conduit CD2 by a tee connection T2.
- the solenoid valve SVl is responsive to a throttle switch TS which closes at a predetermined low throttle setting to supply energy from the engine battery BT to energize the solenoid valve SV] and open the conduit CD2 to the atmosphere via the conduit CD3.
- the second portion VOL2 of the canister means CANl may be vented to the atmosphere through a solenoid valve SV2 located in a conduit CD7 which is connected to the intermediate conduit CD4 between the check valve VCK and the second portion of the canister means CAN].
- the throttle switch TS When the throttle is advanced during acceleration past the predetermined low throttle setting to which the throttle switch TS is responsive, the throttle switch TS opens to deenergize the solenoid valve SVl and enable pressurization of thefirst and second portions of the canister means CANl.
- the needle valve NVl acts as a restricted orifice to delay pressurization of the canister means CANl. Thus, the amount of pressurization required to move the diaphragm DAl and the actuator ATC is not reached until a predetermined engine speed or engine load is reached.
- the needle valve NVl also acts to eliminate or reduce the effects of transients in air pressure changes in the main supply conduit CD1 which result from alternate acceleration, cruising and deceleration modes of operation.
- the output from the canister means CANl in conduit CD5 is sufficient to overcome the bias supplied by the spring SPR against the diaphragm DAl.
- the diaphragm DAl may then move to the right as shown on the drawing, to open the valve ACV via link ACTL to enable flow of air through conduit CD6 from the main supply conduit CD1 to the intake manifold lM of the engine.
- the diaphragm DA] is preferably moved an amount proportional to the increase to enable a proportionally greater flow through the control valve ACV and conduit CD6 to the intake manifold. This will lean out the air-to-fuel ratio in the intake manifold and cause the emission devices to see less combustibles and therefore run cooler. Fuel economy will also be improved. The reaction temperatures for the emission control devices will be reduced.
- conduit CD6 is directly connected to the output of the air pump AP. That is, even though the brakes are not applied to the vehicle during the cruising condition but the vehicle is allowed to proceed without touching the brakes, the air pump AP will slow down as the engine slows down thus reducing the pressure of the air available for the connecting conduit CD6 and thus enriching the air-to-fuel ratio during this condition.
- both the throttle switch TS and the brake switch BS are closed.
- the throttle switch TS enables the complete venting of the first portion VOLl of the canister means CANl to ready the control system for resetting for operation whenever the vehicle is started up again.
- the solenoid valve SV2 opens and permits a venting of the second portion VOL2 of the canister means CANl through the conduit CD7.
- the reduction of pressurization of the second portion VOL2 is slower than the reduction of pressurization in the first portion VOLl, because of the inclusion of the needle valve NV2 in the conduit CD7, the application of braking power sufficient to bring the vehicle to a complete stop will be long enough to enable a reduction of pressurization of the second portion VOL2 of the canister means CAN] to a level which enables the control apparatus to be reset for operation from a standing start.
- the canister means CANl has been shown as divided into a first portion VOLl and a second portion VOL2 which are separated by a check valve VCK, it is to be understood that a single canister means may be utilized but that the system will not operate as effectively as when a canister system having two portions is provided.
- means other than the needle valve NVl such as a time delayed opening valve, may be utilized to effect the' time delay required to prevent complete pressurization of the canister means CANl before cruise conditions are reached.
- the needle valve NVl not only effects the time delay but also is advantageousin that it eliminates the transient changes in air pressure in the conduit CD1 in response to alternate acceleration, cruising and deceleration conditions for the engine ENG.
- solenoid valves SVl and SV2 are shown as being located in separate vent conduits, other forms of solenoid valves are available for connection directly in conduits CD2 andCD4, respectively,
- Apparatus for controlling operation of a vehicle internal combustion engine having a carburetor and a throttle valve supplying a mixed fuel and air flow to said engine comprising a. an air pump to be driven by an engine and supply air under a pressure which is related to the operating condition of the engine including the speed of and the load on the engine,
- Apparatus as defined in claim 1 which further includes means for storing the highest signal sensed.
- Apparatus as defined in claim 2 which further includes means responsive to application of braking to the vehicle carrying the engine for reducing the magnitude of said stored signal.
- Apparatus as defined in claim 3 which further includes means for controlling the rate of reduction of the magnitude of said stored signal during application of braking.
- Apparatus as defined in claim 1 which further includes means responsive to a predetermined low throttle position for inhibiting sensing of said engine operating condition by said air pressure sensing means.
- said air flow control means further includes means for increasing the flow of air through said connecting means an amount related to an increase in said signal above said predetermined signal.
- Apparatus as defined in claim 7 which further includes means responsive to reduction of engine speed to a predetermined low throttle setting for inhibiting operation of said air pressure sensing means.
- said pressure sensing means further includes means for storing and maintaining the highest signal sensed before operation of said low throttle inhibiting means.
- said pressure sensing means further includes means responsive to application of braking to the vehicle for reducing the magnitude of said stored signal.
- Apparatus as defined in claim 10 in which said stored signal reducing means includes means for controlling the rate of reduction of the magnitude of said stored signal during application of braking.
- Apparatus as defined in claim 13 which further includes a restricted orifice element connected between said air pressure sensing system and the output of said air pump to reduce the effect of transient changes in air pump output.
- said air pressure sensing means includes a housing having movable means dividing the housing into two chambers, one of said chambers being connected to the output of the air pump so that the position of the dividing means in the housing is responsive to the air pressure supplied by the pump.
- Apparatus as defined in claim 15 which further includes actuator linkage means responsive to the position of said dividing means for controlling said air flow controlling means.
- Apparatus as defined in claim 15 which further includes means for yieldingly biasing said movable dividing means against movement in response to air pump output pressure until a predetermined output pressure is reached.
- said air pressure sensing means includes canister means connected to be pressurized by output air from the air pump to provide an indication of the operating condition of the engine.
- said air pressure sensing means further includes an element having a restricted orifice connected intermediate the air pump output and said canister means to reduce the effect on pressurization of said canister means by transient changes in engine speed.
- said air pressure sensing means further includes means for venting said canister means to reduce and prevent pressurization in response to a predetermined low throttle setting.
- said air pressure sensing means further includes means for venting said canister means to reduce and prevent pressurization in response to application of braking to the vehicle carrying the engine.
- braking responsive venting means includes means for controlling the rate of reduction of pressurization of said canister means in response to braking of the vehicle.
- Apparatus as defined in claim 25 which further includes means connected intermediate the air pump and said first portion of said canister means for delaying pressure build up in said first portion.
- Apparatus as defined in claim 25 which further includes an element having a restricted orifice connected intermediate the air pump outlet and said first portion of said canister means to reduce the effect on pressurization of said first portion by transient changes in the operating condition of the engine.
- Apparatus as defined in claim 25 which further includes means for venting said first portion of said canister means to reduce and prevent pressurization of said first portion in response to a predetermined low throttle setting.
- Apparatus as defined in claim 25 which further includes means for venting said second portion of said canister means to reduce pressurization in response to application of braking to the vehicle carrying the engine.
- braking responsive venting means further includes restricted orifice means for controlling the rate of reduction of pressurization.
- a method for controlling operation of a vehicle internal combustion engine comprising the steps of a. sensing the operating condition of an engine including the speed of and the load on said engine and providing a signal related in magnitude thereto,
- a method as defined in claim 31 which further includes reducing the stored signal in response to application of braking to the vehicle.
- a method for controlling operation of a vehicle internal combustion engine having a carburetor and a throttle valve supplying a fuel-air mixture flow to the engine, and an air pump driven by the engine to supply air under pressure comprising the steps of a. sensing the pressure of the air supplied by said air pump to obtain a signal indicating the speed of and the load on said engine, and
- a method as defined in claim 33 which further includes a. storing the highest signal sensed, and
Abstract
Description
Claims (34)
- 2. Apparatus as defined in claim 1 which further includes means for storing the highest signal sensed.
- 3. Apparatus as defined in claim 2 which further includes means responsive to application of braking to the vehicle carrying the engine for reducing the magnitude of said stored signal.
- 4. Apparatus as defined in claim 3 which further includes means for controlling the rate of reduction of the magnitude of said stored signal during application of braking.
- 5. Apparatus as defined in claim 1 which further includes means responsive to a predetermined low throttle position for inhibiting sensing of said engine operating condition by said air pressure sensing means.
- 6. Apparatus as defined in claim 1 in which said air flow control means includes means responsive to a magnitude of said signal which denotes attainment of a predetermined engine operating condition for enabling flow of air through said connecting means from said air pump.
- 7. Apparatus as defined in claim 6 in which said air flow control means further includes means for increasing the flow of air through said connecting means an amount related to an increase in said signal above said predetermined signal.
- 8. Apparatus as defined in claim 7 which further includes means responsive to reduction of engine speed to a predetermined low throttle setting for inhibiting operation of said air pressure sensing means.
- 9. Apparatus as defined in claim 8 in which said pressure sensing means further includes means for storing and maintaining the highest signal sensed before operation of said low throttle inhibiting means.
- 10. Apparatus as defined in claim 9 in which said pressure sensing means further includes means responsive to application of braking to the vehicle for reducing the magnitude of said stored signal.
- 11. Apparatus as defined in claim 10 in which said stored signal reducing means includes means for controlling the rate of reduction of the magnitude of said stored signal during application of braking.
- 12. Apparatus as defined in claim 1 which further includes means for delaying application of a pressure buildup by said air pump to said air pressure sensing system.
- 13. Apparatus as defined in claim 1 which further includes a restricted orifice element connected between said air pressure sensing system and the output of said air pump to reduce the effect of transient changes in air pump output.
- 14. Apparatus for controlling exhaust system temperatures of a vehicle internal combustion engine having a carburetor and a throttle valve supplying a fuel and air mixture to an intake manifold, and also having an air pump driven by the engine to supply output air under a pressure which is related to the operating condition of the engine including the speed of and the load on the engine, comprising a. means for sensing the pressure of air supplied by the air pump, b. means for connecting the air pump to the intake manifold of the engine, and c. means responsive to the sensed air pressure for controlling air flow through said connecting means.
- 15. Apparatus as defined in claim 14 in which said air pressure sensing means includes a housing having movable means dividing the housing into two chambers, one of said chambers being connected to the output of the air pump so that the position of the dividing means in the housing is responsive to the air pressure supplied by the pump.
- 16. Apparatus as defined in claim 15 which further includes actuator linkage means responsive to the position of said dividing means for controlling said air flow controlling means.
- 17. Apparatus as defined in claim 15 which further includes means for yieldingly biasing said movable dividing means against movement in response to air pump output pressure until a predetermined output pressure is reached.
- 18. Apparatus as defined in claim 17 in which said biasing means yields in response to sensed air pressure an amount related to the increase of sensed pressure above said predetermined output pressure.
- 19. Apparatus as defined in claim 14 in which said air pressure sensing means includes canister means connected to be pressurized by output air from the air pump to provide an indication of the operating condition of the engine.
- 20. Apparatus as defined in claim 19 in which said air pressure sensing means further includes means connected intermediate the air pump output and said canister means for delaying pressure build up in said canister means.
- 21. Apparatus as defined in claim 19 in which said air pressure sensing means further includes an element having a restricted orifice connected intermediate the air pump output and said canister means to reduce the effect on pressurization of said canister means by transient changes in engine speed.
- 22. Apparatus as defined in claim 19 in which said air pressure sensing means further includes means for venting said canister means to reduce and prevent pressurization in response to a predetermined low throttle setting.
- 23. Apparatus as defined in claim 19 in which said air pressure sensing means further includes means for venting said canister means to reduce and prevent pressurization in response to application of braking to the vehicle carrying the engine.
- 24. Apparatus as defined in claim 23 in which said braking responsive venting means includes means for controlling the rate of reduction of pressurization of said canister means in response to braking of the vehicle.
- 25. Apparatus as defined in claim 19 in which said canister means is divided by means including check valve means enabling a first portion to receive pressurization from the air pump and a second portion to be pressurized from said first portion via said check valve means to store and retain air under a pressure related to the highest engine speed and load condition sensed.
- 26. Apparatus as defined in claim 25 which further includes means connected intermediate the air pump and said first portion of said canister means for delaying pressure build up in said first portion.
- 27. Apparatus as defined in claim 25 which further includes an element having a restricted orifice connected intermediate the air pump outlet and said first portion of said canister means to reduce the effect on pressurization of said first portion by transient changes in the operating condition of the engine.
- 28. Apparatus as defined in claim 25 which further includes means for venting said first portion of said canister means to reduce and prevent pressurization of said first portion in response to a predetermined low throttle setting.
- 29. Apparatus as defined in claim 25 which further includes means for venting said second portion of said canister means to reduce pressurization in response to application of braking to the vehicle carrying the engine.
- 30. Apparatus as defined in claim 29 in which said braking responsive venting means further includes restricted orifice means for controlling the rate of reduction of pressurization.
- 31. A method for controlling operation of a vehicle internal combustion engine comprising the steps of a. sensing the operating condition of an engine including the speed of and the load on said engine and providing a signal related in magnitude thereto, b. inhibiting sensing of engine operating condition in response to a predetermined low throttle setting, c. storing the highest signal sensed before engine operating condition sensing is inhibited, and d. connecting air under pressure to lean out the fuel-air mixture being supplied to the engine in response to a predetermined magnitude of said signal.
- 32. A method as defined in claim 31 which further includes reducing the stored signal in response to application of braking to the vehicle.
- 33. A method for controlling operation of a vehicle internal combustion engine having a carburetor and a throttle valve supplying a fuel-air mixtuRe flow to the engine, and an air pump driven by the engine to supply air under pressure, comprising the steps of a. sensing the pressure of the air supplied by said air pump to obtain a signal indicating the speed of and the load on said engine, and b. connecting air under pressure from said air pump to lean out the fuel-air mixture supplied by the carburetor to the engine when a pump air pressure is sensed which provides a predetermined magnitude of said signal.
- 34. A method as defined in claim 33 which further includes inhibiting the sensing of air pressure in response to a predetermined low throttle setting.
- 35. A method as defined in claim 33 which further includes a. storing the highest signal sensed, and b. reducing the magnitude of stored signal in response to application of braking to the vehicle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00294952A US3799301A (en) | 1972-10-04 | 1972-10-04 | Method and apparatus for engine operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00294952A US3799301A (en) | 1972-10-04 | 1972-10-04 | Method and apparatus for engine operation |
Publications (1)
Publication Number | Publication Date |
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US3799301A true US3799301A (en) | 1974-03-26 |
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Application Number | Title | Priority Date | Filing Date |
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US00294952A Expired - Lifetime US3799301A (en) | 1972-10-04 | 1972-10-04 | Method and apparatus for engine operation |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931710A (en) * | 1972-11-10 | 1976-01-13 | Deutsche Vergaser Gmbh & Co. Kommanditgesellschaft | Method and installation for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines |
US3948236A (en) * | 1972-11-24 | 1976-04-06 | Regie Nationale Des Usines Renault | Method of regulating the fuel supply of internal combustion engines |
US3983697A (en) * | 1974-01-16 | 1976-10-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Exhaust gas cleaning system for internal combustion engines |
US4007718A (en) * | 1972-08-02 | 1977-02-15 | Laprade Bernard | Device for correcting the air/petrol ratio for an internal combustion engine |
US4007719A (en) * | 1973-06-29 | 1977-02-15 | Robert Bosch G.M.B.H. | Apparatus for the detoxification of exhaust gases |
US4235209A (en) * | 1978-06-02 | 1980-11-25 | Ibbott Jack Kenneth | Device for introducing additional air into intake passage leading to combustion chamber |
US4253437A (en) * | 1978-01-30 | 1981-03-03 | Toyo Kogyo Co., Ltd. | Fuel control means for internal combustion engines |
US4305365A (en) * | 1978-04-10 | 1981-12-15 | Nissan Motor Company, Limited | Electronic controlled fuel injection system |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3294074A (en) * | 1963-09-30 | 1966-12-27 | Filtrona Filter G M B H | Supplemental air supply device |
US3364909A (en) * | 1965-10-24 | 1968-01-23 | Gen Motors Corp | Engine exhaust emission control system having air flow control valve |
US3585976A (en) * | 1969-10-13 | 1971-06-22 | Paul M Rider | Manifold vacuum controlled supplemental air inlet with air filtering means |
US3641767A (en) * | 1970-02-12 | 1972-02-15 | Exxon Research Engineering Co | Low-polluting internal combustion engine wherein secondary air is utilized to prevent overheating of the exhaust manifold |
US3707954A (en) * | 1971-02-24 | 1973-01-02 | Toyota Motor Co Ltd | Exhaust gas purifying device |
US3744464A (en) * | 1970-03-20 | 1973-07-10 | Lucas Industries Ltd | Arrangement for controlling the pressure in the inlet manifold of an internal combustion engine |
-
1972
- 1972-10-04 US US00294952A patent/US3799301A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3294074A (en) * | 1963-09-30 | 1966-12-27 | Filtrona Filter G M B H | Supplemental air supply device |
US3364909A (en) * | 1965-10-24 | 1968-01-23 | Gen Motors Corp | Engine exhaust emission control system having air flow control valve |
US3585976A (en) * | 1969-10-13 | 1971-06-22 | Paul M Rider | Manifold vacuum controlled supplemental air inlet with air filtering means |
US3641767A (en) * | 1970-02-12 | 1972-02-15 | Exxon Research Engineering Co | Low-polluting internal combustion engine wherein secondary air is utilized to prevent overheating of the exhaust manifold |
US3744464A (en) * | 1970-03-20 | 1973-07-10 | Lucas Industries Ltd | Arrangement for controlling the pressure in the inlet manifold of an internal combustion engine |
US3707954A (en) * | 1971-02-24 | 1973-01-02 | Toyota Motor Co Ltd | Exhaust gas purifying device |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007718A (en) * | 1972-08-02 | 1977-02-15 | Laprade Bernard | Device for correcting the air/petrol ratio for an internal combustion engine |
US3931710A (en) * | 1972-11-10 | 1976-01-13 | Deutsche Vergaser Gmbh & Co. Kommanditgesellschaft | Method and installation for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines |
US4037406A (en) * | 1972-11-10 | 1977-07-26 | Haertel Gunter | Apparatus for the predetermined addition of secondary air for the optimum combustion of exhaust gases of internal combustion engines |
US3948236A (en) * | 1972-11-24 | 1976-04-06 | Regie Nationale Des Usines Renault | Method of regulating the fuel supply of internal combustion engines |
US4007719A (en) * | 1973-06-29 | 1977-02-15 | Robert Bosch G.M.B.H. | Apparatus for the detoxification of exhaust gases |
US3983697A (en) * | 1974-01-16 | 1976-10-05 | Toyota Jidosha Kogyo Kabushiki Kaisha | Exhaust gas cleaning system for internal combustion engines |
US4253437A (en) * | 1978-01-30 | 1981-03-03 | Toyo Kogyo Co., Ltd. | Fuel control means for internal combustion engines |
US4305365A (en) * | 1978-04-10 | 1981-12-15 | Nissan Motor Company, Limited | Electronic controlled fuel injection system |
US4235209A (en) * | 1978-06-02 | 1980-11-25 | Ibbott Jack Kenneth | Device for introducing additional air into intake passage leading to combustion chamber |
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Owner name: NATWEST USA CREDIT CORP. Free format text: SECURITY INTEREST;ASSIGNOR:AP INDUSTRIES, INC., A CORP. OF DE;REEL/FRAME:004705/0021 Effective date: 19870428 Owner name: NATWEST USA CREDIT CORP.,STATELESS Free format text: SECURITY INTEREST;ASSIGNOR:AP INDUSTRIES, INC., A CORP. OF DE;REEL/FRAME:004705/0021 Effective date: 19870428 |
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Owner name: NATWEST USA CREDIT CORP., A NY CORP. Free format text: SECURITY INTEREST;ASSIGNOR:AP PARTS MANUFACTURING COMPANY, A DE CORP.;REEL/FRAME:004941/0303 Effective date: 19880805 |
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Owner name: AP PARTS MANUFACTURING COMPANY, 535 MADISON AVE., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AP INDUSTRIES, INC.;REEL/FRAME:004946/0001 Effective date: 19880805 Owner name: AP PARTS MANUFACTURING COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AP INDUSTRIES, INC.;REEL/FRAME:004946/0001 Effective date: 19880805 |
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Owner name: INTERNATIONAL AUTOMOBILE PRODUCTS HOLDINGS CORP., Free format text: SECURITY INTEREST;ASSIGNOR:A P PARTS MANUFACUTURING COMPANY, A CORP. OF DE;REEL/FRAME:005659/0117 Effective date: 19910228 |
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Owner name: AP PARTS MANUFACTURING COMPANY, OHIO Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:INTERNATIONAL AUTOMOBILE PRODUCTS HOLDINGS CORP.;REEL/FRAME:006348/0803 Effective date: 19920331 |
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Owner name: A.P. PARTS MANUFACTURING COMPANY, OHIO Free format text: TERMINATION OF SECURITY INTEREST;ASSIGNOR:GENERAL ELECTRIC CREDIT CORPORATION;REEL/FRAME:008274/0746 Effective date: 19940325 |