GB1420104A - Internal combustion engines ignition timing systems - Google Patents

Internal combustion engines ignition timing systems

Info

Publication number
GB1420104A
GB1420104A GB281273A GB281273A GB1420104A GB 1420104 A GB1420104 A GB 1420104A GB 281273 A GB281273 A GB 281273A GB 281273 A GB281273 A GB 281273A GB 1420104 A GB1420104 A GB 1420104A
Authority
GB
United Kingdom
Prior art keywords
box
engine
stop
valve
rod
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
GB281273A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1420104A publication Critical patent/GB1420104A/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
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
    • F02P5/10—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure
    • F02P5/103—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure dependent on the combustion-air pressure in engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1420104 Ignition timing ROBERT BOSCH GmbH 19 Jan 1973 [21 Jan 1972] 2812/73 Heading F1B An I.C. engine has an ignition timing system for reducing pollution from the engine during warm-up comprising first and second vacuum-operated adjusting boxes 25, 26 for sensing pressures in the engine induction system, the adjusting boxes being connected by an adjusting rod 24 to an adjusting plate of an ignition distributor 23 of the engine, the box 25 being operable to displace the rod 24 to retard the ignition in a first operating range of the engine in response to pressure reduction in the box 25 and the box 26 being operable to displace the rod 24 in the reverse direction to advance the ignition in response to a pressure reduction in the second adjusting box in a second operating range of the engine, the maximum rod travel in the retarding direction being variable by means of a stop 27 whose position depends on the engine temperature. Switch 30 is closed during heating of the engine exhaust system and opens when. it reaches operating temperature, closure of this switch actuating an electromagnet 29 to withdraw the stop 27 from recess 28 to allow rod 24 greater movement, valve 33 to provide a by-pass from upstream of throttle valve 34 to inlet manifold 32 and valve 31 to connect box 25 to manifold 32 and box 26 to location 36 adjacent the throttle valve. When the exhaust system has reached operating temperature, switch 30 opens allowing stop 27 to engage recess 28, valve 33 to close and valve 31 to connect box 25 to location 37 and box 26 to location 36. The engagement of stop 27 in recess 28 limits ignition retardation to about 5 degrees after TDC, but when the stop is withdrawn during warm-up, maximum retardation can be in the range 10 degrees to 25 degrees after TDC. In Fig. 6 (not shown), the stop 27 and valve 33 are actuated by vacuum boxes (42), (45). In Figs. 10 and 14 (not shown) the vacuum advance/retard unit has three boxes (51), (52), (53), the box (53) acting to control the position of a stop to limit movement of rod 24 in dependence upon the position of switch 30, responsive to exhaust system temperature.
GB281273A 1972-01-21 1973-01-19 Internal combustion engines ignition timing systems Expired GB1420104A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2202786A DE2202786C3 (en) 1972-01-21 1972-01-21 Device for adjusting the ignition point

Publications (1)

Publication Number Publication Date
GB1420104A true GB1420104A (en) 1976-01-07

Family

ID=5833598

Family Applications (1)

Application Number Title Priority Date Filing Date
GB281273A Expired GB1420104A (en) 1972-01-21 1973-01-19 Internal combustion engines ignition timing systems

Country Status (8)

Country Link
US (1) US3865089A (en)
JP (1) JPS5815623B2 (en)
DE (1) DE2202786C3 (en)
FR (1) FR2168836A5 (en)
GB (1) GB1420104A (en)
IT (1) IT973275B (en)
NL (1) NL168301C (en)
SE (1) SE386480B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307686A (en) * 1976-05-26 1981-12-29 Nippondenso Co., Ltd. Intake vacuum actuated ignition timing shift device with two vacuum chambers and a composite shift characteristic
GB2137692A (en) * 1983-03-10 1984-10-10 Fuji Heavy Ind Ltd System for controlling the ignition timing of an engine

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5264235U (en) * 1975-11-06 1977-05-12
DE2603322C2 (en) * 1976-01-29 1983-01-20 Toyota Jidosha Kogyo K.K., Toyota, Aichi Ignition timing device
JPS52134940A (en) * 1976-05-06 1977-11-11 Toyota Motor Corp Ignition timing control means for internal combustion engine
JPS53118931U (en) * 1977-03-01 1978-09-21
JPS53123733A (en) * 1977-04-05 1978-10-28 Fuji Heavy Ind Ltd Ignition timing adjusting equipment for internal combustion engine
JPS53150337U (en) * 1977-04-30 1978-11-27
US4159702A (en) * 1977-12-27 1979-07-03 Ford Motor Company Engine ignition timing control with multi-stage advances, retard, and altitude compensation functions
DE2818469A1 (en) * 1978-04-27 1979-11-08 Porsche Ag DEVICE FOR ADJUSTING THE IGNITION TIME FOR COMBUSTION MACHINERY
DE2838726A1 (en) * 1978-09-06 1980-03-27 Bosch Gmbh Robert IGNITION DISTRIBUTOR FOR INTERNAL COMBUSTION ENGINES
FR2500073B1 (en) * 1981-02-18 1985-11-08 Ducellier & Cie IGNITION ADVANCE CORRECTION DEVICE
JPS5990771A (en) * 1982-11-15 1984-05-25 Nissan Motor Co Ltd Ignition timing controlling apparatus for internal-combustion engine
JPS5986366U (en) * 1982-12-03 1984-06-11 日産自動車株式会社 Internal combustion engine ignition timing control device
JPS5999177U (en) * 1982-12-23 1984-07-04 日産自動車株式会社 Internal combustion engine ignition timing control device
DE3337429A1 (en) * 1983-10-14 1985-04-25 Bayerische Motoren Werke AG, 8000 München DEVICE FOR ADJUSTING THE IDLE OF AN INTERNAL COMBUSTION ENGINE
DE3342920A1 (en) * 1983-11-26 1985-06-05 Robert Bosch Gmbh, 7000 Stuttgart IGNITION DISTRIBUTOR FOR INTERNAL COMBUSTION ENGINES

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426737A (en) * 1965-10-23 1969-02-11 Brooks Walker Spark retard control
US3447518A (en) * 1967-10-05 1969-06-03 Brooks Walker Thermal spark retard
JPS4938219B1 (en) * 1968-09-03 1974-10-16
US3515368A (en) * 1968-09-11 1970-06-02 Eaton Yale & Towne Thermally responsive on and off vacuum control valve
US3561410A (en) * 1968-11-29 1971-02-09 Holley Carburetor Co Engine ignition timing arrangement
US3626909A (en) * 1969-06-17 1971-12-14 Toyo Kogyo Co Rotary piston internal combustion engine
DE1933507B2 (en) * 1969-07-02 1972-12-07 Daimler Benz Ag, 7000 Stuttgart ADJUSTMENT DEVICE FOR IGNITION TIME AND THROTTLE VALVE CLOSING OF COMBUSTION MACHINERY
US3631845A (en) * 1969-09-26 1972-01-04 Brooks Walker Spark timing control for internal-combustion engine
US3670709A (en) * 1970-05-25 1972-06-20 Gen Motors Corp Idle air control
JPS501648B1 (en) * 1971-02-24 1975-01-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307686A (en) * 1976-05-26 1981-12-29 Nippondenso Co., Ltd. Intake vacuum actuated ignition timing shift device with two vacuum chambers and a composite shift characteristic
GB2137692A (en) * 1983-03-10 1984-10-10 Fuji Heavy Ind Ltd System for controlling the ignition timing of an engine

Also Published As

Publication number Publication date
NL168301B (en) 1981-10-16
US3865089A (en) 1975-02-11
IT973275B (en) 1974-06-10
FR2168836A5 (en) 1973-08-31
DE2202786C3 (en) 1980-07-31
JPS4882233A (en) 1973-11-02
JPS5815623B2 (en) 1983-03-26
NL7300812A (en) 1973-07-24
DE2202786B2 (en) 1979-11-08
NL168301C (en) 1982-03-16
SE386480B (en) 1976-08-09
DE2202786A1 (en) 1973-07-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee