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GB1383140A - Internal combustion engine exhaust gas recirculation control valve assemblies - Google Patents

Internal combustion engine exhaust gas recirculation control valve assemblies

Info

Publication number
GB1383140A
GB1383140A GB1373173A GB1373173A GB1383140A GB 1383140 A GB1383140 A GB 1383140A GB 1373173 A GB1373173 A GB 1373173A GB 1373173 A GB1373173 A GB 1373173A GB 1383140 A GB1383140 A GB 1383140A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
exhaust gas
gas recirculation
chamber
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
Application number
GB1373173A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Publication of GB1383140A publication Critical patent/GB1383140A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F02M26/58—Constructional details of the actuator; Mounting thereof
    • 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • F02M26/61—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure
    • 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
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/002—EGR valve being controlled by vacuum or overpressure
    • F02M2026/0025—Intake vacuum or overpressure modulating valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

1383140 Treating charge GENERAL MOTORS CORP 22 March 1973 [17 April 1972] 13731/73 Heading F1B [Also in Division G3] An exhaust gas recirculation control valve assembly uses I.C. engine exhaust back pressure to recirculate exhaust gas at a rate proportional to air-flow to a point downstream of an engine throttle. The valve assembly is used with an inlet and exhaust manifold 10, Fig.1, including an insert 42 in which a recirculation passage has first and second parts 60, 64 connectable with the valve assembly 62. The latter comprises a valve seat 78, Fig.3, between an inlet 72 and an outlet 74, a control mechanism maintaining a constant pressure in zone 92, a spring-closed valve member 80, a chamber 106 communicating through first and second openings with induction vacuum and atmosphere to apply a control pressure to a pressure-responsive member 84 connected to the valve member, the control pressure being regulated by a bleed valve 98. A pressureresponsive device 94 displaces the bleed valve 98 in response to increased pressure in zone 92, to decrease the control pressure resulting in unseating of valve 80 to increase exhaust gas recirculation, the bleed valve being biased to increase the control pressure in response to a decrease in the pressure in the zone thereby decreasing the exhaust gas recirculation. Diaphragms 94 and 84 tend to move in unison to maintain a constant pressure in zone 90 to maintain exhaust gas recirculation at a rate proportional to the rate that combustion air flows into the engine. In a modification a pressure drop in zone 130, Fig.4, causes a spring-loaded central diaphragm portion 138 to unseat a valve 154 to admit air from chamber 142 and openings 146 into chamber 148 causing spring displacement of diaphragm 126 and valve 122 downwardly to reduce exhaust gas recirculation. Chamber 148 may be connected to a carburetter, the manifold 10 or passage 64. In a further modification pressure in zone 174, Fig.5, raises diaphragm 180 and valve member 184 to reduce air-flow through orifice 188 into chamber 190 thereby causing a spring-loaded diaphragm 172 to unseat a valve 168 to increase exhaust gas recirculation. Valve 184 also may control the application of inlet vacuum to chamber 190 by shaping surface 208. Alternatively the connections of pipes 200 and 194 to fittings 194, 198 may be reversed so that valve surface 208 can control the application of vacuum to chamber 202. A valve 206 controlled by temperature may be connected in pipes 194, 196.
GB1373173A 1972-04-17 1973-03-22 Internal combustion engine exhaust gas recirculation control valve assemblies Expired GB1383140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24437872A 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
GB1383140A true GB1383140A (en) 1975-02-05

Family

ID=22922486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1373173A Expired GB1383140A (en) 1972-04-17 1973-03-22 Internal combustion engine exhaust gas recirculation control valve assemblies

Country Status (6)

Country Link
JP (2) JPS5228171B2 (en)
CA (1) CA972642A (en)
DE (1) DE2315734C2 (en)
FR (1) FR2180757B1 (en)
GB (1) GB1383140A (en)
IT (1) IT980084B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236357A (en) * 1989-09-26 1991-04-03 Pierburg Gmbh I.c. engine exhaust gas recycling valve

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2528760C3 (en) * 1975-06-27 1980-12-11 Pierburg Gmbh & Co Kg, 4040 Neuss Control device for the recirculation of exhaust gas
JPS52106023A (en) * 1976-03-02 1977-09-06 Toyota Motor Corp Automobile engine exhaust gas re-circulation unit
JPS5724910Y2 (en) * 1976-07-30 1982-05-29
JPS5724911Y2 (en) * 1976-10-08 1982-05-29
DE3511638C3 (en) * 1985-03-29 1996-06-20 Daimler Benz Ag Exhaust gas recirculation valve
US4725529A (en) 1985-04-30 1988-02-16 Konishiroku Photo Industry Co., Ltd. Developing inhibitor arrangment in light-sensitive silver halide color photographic materials
DE3935093A1 (en) * 1989-10-21 1991-04-25 Daimler Benz Ag EXHAUST GAS RECIRCULATION DEVICE FOR A COMBUSTION ENGINE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7141493U (en) * 1972-04-06 General Motors Corp Internal combustion engine with controlled exhaust gas recirculation from the exhaust system to the intake duct
IT947400B (en) * 1972-02-08 1973-05-21 Alfa Romeo Spa DEVICE FOR REGULATING THE EXHAUST GAS FLOW RETURN SIDE IN AN INTERNAL COMBUSTION ENGINE
JPS5146210B2 (en) * 1972-03-13 1976-12-08
US3802402A (en) * 1972-03-30 1974-04-09 P Swatman Internal combustion engines
JPS493019A (en) * 1972-04-10 1974-01-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236357A (en) * 1989-09-26 1991-04-03 Pierburg Gmbh I.c. engine exhaust gas recycling valve

Also Published As

Publication number Publication date
JPS4915820A (en) 1974-02-12
FR2180757B1 (en) 1976-06-11
DE2315734A1 (en) 1973-10-25
IT980084B (en) 1974-09-30
DE2315734C2 (en) 1982-03-25
FR2180757A1 (en) 1973-11-30
JPS5267419A (en) 1977-06-03
CA972642A (en) 1975-08-12
JPS5228171B2 (en) 1977-07-25

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19930321