JPS578344A - Exhaust gas recirculating device for diesel engine - Google Patents

Exhaust gas recirculating device for diesel engine

Info

Publication number
JPS578344A
JPS578344A JP8292780A JP8292780A JPS578344A JP S578344 A JPS578344 A JP S578344A JP 8292780 A JP8292780 A JP 8292780A JP 8292780 A JP8292780 A JP 8292780A JP S578344 A JPS578344 A JP S578344A
Authority
JP
Japan
Prior art keywords
valve
speed
throttle valve
exhaust gas
intake
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.)
Pending
Application number
JP8292780A
Other languages
Japanese (ja)
Inventor
Shozo Yanagisawa
Akiyasu Kuwabara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8292780A priority Critical patent/JPS578344A/en
Publication of JPS578344A publication Critical patent/JPS578344A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exhaust-Gas Circulating Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: To prevent a rapid change of torque, by providing the second throttle valve interlocking to an accelerator pedal in the upstream of a throttle valve and throttling an intake pipe when recirculation of exhaust gas is stopped.
CONSTITUTION: Intake and exhaust pipes 2, 4 of an engine 3 are communicated by a recirculating passage 9 provided with an exhaust gas recirculation (EGR) valve 7. The first throttle valve 5 controlled by a servodiaphragm valve 6 is provided in the intake pipe 2 and driven in a closing direction by control of both solenoid valves 8a, 8b in negative pressure passages 10 when the valve 7 is opened. Further the second throttle valve 14 is provided in the intake valve 2 to interlock to an accelerator pedal 17 through a time delay mechanism 16. Then the second throttle valve 14 is set its opening larger than the first valve 5 for speed of the engine not more than prescribed speed while reversely set to the above for not less than the prescribed speed by the delay mechanism 16, thus a rapid rise of speed can be prevented at the speed when EGR operation is stopped.
COPYRIGHT: (C)1982,JPO&Japio
JP8292780A 1980-06-20 1980-06-20 Exhaust gas recirculating device for diesel engine Pending JPS578344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8292780A JPS578344A (en) 1980-06-20 1980-06-20 Exhaust gas recirculating device for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8292780A JPS578344A (en) 1980-06-20 1980-06-20 Exhaust gas recirculating device for diesel engine

Publications (1)

Publication Number Publication Date
JPS578344A true JPS578344A (en) 1982-01-16

Family

ID=13787860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8292780A Pending JPS578344A (en) 1980-06-20 1980-06-20 Exhaust gas recirculating device for diesel engine

Country Status (1)

Country Link
JP (1) JPS578344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102960U (en) * 1982-12-27 1984-07-11 マツダ株式会社 Diesel engine exhaust recirculation device
JPS60104755A (en) * 1983-11-11 1985-06-10 Nec Corp Egr controller for engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102960U (en) * 1982-12-27 1984-07-11 マツダ株式会社 Diesel engine exhaust recirculation device
JPS60104755A (en) * 1983-11-11 1985-06-10 Nec Corp Egr controller for engine
JPH0345229B2 (en) * 1983-11-11 1991-07-10 Nippon Denki Kk

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