GB1403503A - Internal combustion engine exhaust gas recirculation system - Google Patents

Internal combustion engine exhaust gas recirculation system

Info

Publication number
GB1403503A
GB1403503A GB4191773A GB4191773A GB1403503A GB 1403503 A GB1403503 A GB 1403503A GB 4191773 A GB4191773 A GB 4191773A GB 4191773 A GB4191773 A GB 4191773A GB 1403503 A GB1403503 A GB 1403503A
Authority
GB
United Kingdom
Prior art keywords
switch
valve
predetermined
closed
detector
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
GB4191773A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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
Priority claimed from JP47090636A external-priority patent/JPS5240362B2/ja
Priority claimed from JP11476472U external-priority patent/JPS5319298Y2/ja
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of GB1403503A publication Critical patent/GB1403503A/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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • 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
    • F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
    • 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
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings

Landscapes

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

Abstract

1403503 I C engine exhaust gas recirculation NISSAN MOTOR CO Ltd 6 Sept 1973 [9 Sept 1972 3 Oct 1972] 41917/73 Heading F1B The failure or incorrect operation of an exhaust gas recirculation metering valve 18, operated by a diaphragm 20 in response to the vacuum in the induction system, e.g. at a carburetter port 26 which is upstream of the throttle valve 12 in the minimum open position, is detected by a detector 32 which operates to cause a relay 58 to be actuated to energize an alarm 56, e.g. a buzzer or lamp. The detector 32 may comprise a diaphragm 34 carrying a contact 46 which engages the contact 48 to blow the fuse 62 and energize the relay 58 if the diaphragm 20 should rupture and the pressure in the detector chamber 36, normally equal to that in chamber 40, rises towards atmospheric pressure. With the fuse 62 blown the relay will, with the ignition switch 50 closed, remain energized due to the circuit through the load 60. The circuit to the fuse 62 may include three switches (64, 66, 68), Fig. 4 (not shown). One switch (64) is closed above a predetermined engine temperature, another switch (66) is closed above a predetermined vacuum, e.g. 50 mm Hg, in the induction system and the third switch (68) is closed if the valve 18 is not open to a predetermined extent, e.g. an extent corresponding to a predetermined induction vacuum, e.g. 45 mm Hg. The third switch (68) may be replaced by a temperature responsive switch (84), Fig. 7 (not shown) in the recirculation conduit downstream of the valve 18. The latter switch (84) is closed if the detected temperature is below a predetermined value, e.g. 100 or 200‹C, indicating the partial or complete lack of recirculation. The detector may comprise a switch (112, 114), Figs. 8 and 9 (not shown), operated by the valve 18 and open below a predetermined valve opening. The switch (112, 114) is in the circuit of an electromagnetic or electronic latching relay (96) which closes the circuit of the alarm when the ignition switch 50 and the valve operated switch (112, 114) are closed. The alarm 56 is energized until the valve 18 opens to the predetermined opening.
GB4191773A 1972-09-09 1973-09-06 Internal combustion engine exhaust gas recirculation system Expired GB1403503A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47090636A JPS5240362B2 (en) 1972-09-09 1972-09-09
JP11476472U JPS5319298Y2 (en) 1972-10-03 1972-10-03

Publications (1)

Publication Number Publication Date
GB1403503A true GB1403503A (en) 1975-08-28

Family

ID=26432095

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4191773A Expired GB1403503A (en) 1972-09-09 1973-09-06 Internal combustion engine exhaust gas recirculation system

Country Status (2)

Country Link
US (1) US3850151A (en)
GB (1) GB1403503A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130098A (en) * 1974-03-27 1978-12-19 Robert Bosch Gmbh Method and apparatus for reducing the toxic components in exhaust gas
DE2414761C2 (en) * 1974-03-27 1985-01-10 Robert Bosch Gmbh, 7000 Stuttgart Internal combustion engine
JPS59190439A (en) * 1983-04-11 1984-10-29 Hitachi Ltd Idle rotating speed control unit
DE4121071C2 (en) * 1991-06-26 2001-11-08 Bosch Gmbh Robert Exhaust gas recirculation system in an internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779222A (en) * 1972-09-25 1973-12-18 Ranco Inc Malfunction indicator for exhaust gas recirculation valve
US3794006A (en) * 1972-12-05 1974-02-26 Ford Motor Co Egr warning system

Also Published As

Publication number Publication date
US3850151A (en) 1974-11-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee