GB1450930A - Control system for exhaust gas recirculating valve - Google Patents

Control system for exhaust gas recirculating valve

Info

Publication number
GB1450930A
GB1450930A GB5998273A GB5998273A GB1450930A GB 1450930 A GB1450930 A GB 1450930A GB 5998273 A GB5998273 A GB 5998273A GB 5998273 A GB5998273 A GB 5998273A GB 1450930 A GB1450930 A GB 1450930A
Authority
GB
United Kingdom
Prior art keywords
valve
vacuum
chamber
exhaust gas
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
Application number
GB5998273A
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.)
Robertshaw US Holding Corp
Original Assignee
Ranco Inc
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 Ranco Inc filed Critical Ranco Inc
Publication of GB1450930A publication Critical patent/GB1450930A/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
    • 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

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)
  • Fluid-Driven Valves (AREA)

Abstract

1450930 Treating IC engine charge RANCO Inc 28 Dec 1973 [2 Jan 1973] 59982/73 Heading F1B [Also in Division G3] An exhaust gas recirculation system comprises an exhaust gas recirculation valve 14 controlling the flow of exhaust gas from the exhaust manifold 15 to the inlet manifold 13 of an I.C. engine, a fluid-pressure regulator 26 controlling the pressure applied to the valve 14 in dependence upon the rate of flow of air through venturi 12, and a secondary vacuum control valve 34 which overrides the regulator 26 to close the valve 14 whenever the throttle plate 11 of the carburetter moves to a closed or idle position. When the throttle plate 11 is fully open a low vacuum prevails at port 63 downstream of the venturi 12 which, when applied to a chamber 52 of the control valve 34 causes valve-member 56 to shut off the vacuum derived from the inlet manifold 13 and admit atmospheric air from vent 60 to the port 55 and thence chamber 20 of the valve 14 so that the valve-member 24 closes. When the throttle plate 11 is positioned in its mid range, the port 63, being downstream of the plate communicates an increased vacuum to the chamber 52 which in turn opens the valve 14. When the throttle plate 11 moves to its idle or closed position the port 63 becomes located upstream of the plate and once again a low vacuum prevails which, when applied to chamber 52 causes the valve 14 to close. A check valve or reservoir may be placed in conduit 27 so that a sudden drop in vacuum in the manifold 13 will not necessarily cause a loss in vacuum in chamber 20.
GB5998273A 1973-01-02 1973-12-28 Control system for exhaust gas recirculating valve Expired GB1450930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32015173A 1973-01-02 1973-01-02

Publications (1)

Publication Number Publication Date
GB1450930A true GB1450930A (en) 1976-09-29

Family

ID=23245101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5998273A Expired GB1450930A (en) 1973-01-02 1973-12-28 Control system for exhaust gas recirculating valve

Country Status (8)

Country Link
JP (1) JPS5734459B2 (en)
AU (1) AU6377773A (en)
CA (1) CA994192A (en)
DE (1) DE2400029C2 (en)
FR (1) FR2244911B2 (en)
GB (1) GB1450930A (en)
IT (1) IT1002451B (en)
SE (1) SE407966B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5243025A (en) * 1975-10-03 1977-04-04 Toyota Motor Corp Exhaust recircling system
JPS5253131A (en) * 1975-10-28 1977-04-28 Nissan Motor Co Ltd Exhaust return controller
JPS5332230A (en) * 1976-09-07 1978-03-27 Toyota Motor Corp Exhaust gas re-circulation system
JPS6039863B2 (en) * 1977-01-06 1985-09-07 トヨタ自動車株式会社 Internal combustion engine exhaust gas purification device
JPS5393222A (en) * 1977-01-26 1978-08-16 Nippon Soken Inc Exhaust emission recirculating device in internal engine
JPS59111888A (en) * 1982-12-17 1984-06-28 Ricoh Co Ltd Color printer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818880A (en) * 1972-08-02 1974-06-25 Chrysler Corp Exhaust gas recirculation control for internal combustion engines
JPS535665Y2 (en) * 1974-08-08 1978-02-13

Also Published As

Publication number Publication date
FR2244911A2 (en) 1975-04-18
IT1002451B (en) 1976-05-20
CA994192A (en) 1976-08-03
JPS4997125A (en) 1974-09-13
DE2400029A1 (en) 1974-07-04
DE2400029C2 (en) 1986-09-18
JPS5734459B2 (en) 1982-07-23
AU6377773A (en) 1975-06-19
FR2244911B2 (en) 1978-03-17
SE407966B (en) 1979-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee