JPS6466460A - Exhaust gas recirculation control method for diesel engine - Google Patents

Exhaust gas recirculation control method for diesel engine

Info

Publication number
JPS6466460A
JPS6466460A JP62222489A JP22248987A JPS6466460A JP S6466460 A JPS6466460 A JP S6466460A JP 62222489 A JP62222489 A JP 62222489A JP 22248987 A JP22248987 A JP 22248987A JP S6466460 A JPS6466460 A JP S6466460A
Authority
JP
Japan
Prior art keywords
exhaust gas
flow rate
vehicle speed
driving state
gas recirculation
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
JP62222489A
Other languages
Japanese (ja)
Inventor
Shinji Ikeda
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP62222489A priority Critical patent/JPS6466460A/en
Publication of JPS6466460A publication Critical patent/JPS6466460A/en
Pending 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PURPOSE:To reduce Nox in exhaust gas under acceleration by correcting recirculated exhaust gas flow rate increasing to flow rate in proportion to vehicle speed at the time compared to non-steady driving state, in a case of detecting steady driving state. CONSTITUTION:An electronic control unit 10 takes in signals from an engine speed sensor 12, an accelerator opening sensor 14 and a vehicle speed sensor 16, determines exhaust gas recirculation flow rate based on engine load and engine speed and controls opening of an EGR valve in an exhaust gas recirculation flow rate control device 18. This exhaust gas recirculation flow rate reduces according to increase in fuel injection quantity and proper value in sudden acceleration is determined so as not to increase smoke over a fixed value. While, in steady driving state, increase correction coefficient, gradually reducing as vehicle speed increases, is set up according to vehicle speed, and recirculation flow rate is corrected increasing to the one according to said coefficient. In such way, increase correction for acceleration in steady driving state is set up according to vehicle speed, thereby Nox in exhaust gas can be reduced sufficiently.
JP62222489A 1987-09-04 1987-09-04 Exhaust gas recirculation control method for diesel engine Pending JPS6466460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62222489A JPS6466460A (en) 1987-09-04 1987-09-04 Exhaust gas recirculation control method for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222489A JPS6466460A (en) 1987-09-04 1987-09-04 Exhaust gas recirculation control method for diesel engine

Publications (1)

Publication Number Publication Date
JPS6466460A true JPS6466460A (en) 1989-03-13

Family

ID=16783230

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222489A Pending JPS6466460A (en) 1987-09-04 1987-09-04 Exhaust gas recirculation control method for diesel engine

Country Status (1)

Country Link
JP (1) JPS6466460A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435440A (en) * 2011-09-29 2012-05-02 天津大学 A method for testing exhaust gas recirculation rate of diesel engine with single oxygen concentration sensor
CN106150632A (en) * 2015-04-01 2016-11-23 彭津 A kind of purifying vehicle exhaust electronic controller based on EGR Technology

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102435440A (en) * 2011-09-29 2012-05-02 天津大学 A method for testing exhaust gas recirculation rate of diesel engine with single oxygen concentration sensor
CN106150632A (en) * 2015-04-01 2016-11-23 彭津 A kind of purifying vehicle exhaust electronic controller based on EGR Technology

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