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JPS55157004A - Digital control unit for automobile - Google Patents

Digital control unit for automobile

Info

Publication number
JPS55157004A
JPS55157004A JP6390079A JP6390079A JPS55157004A JP S55157004 A JPS55157004 A JP S55157004A JP 6390079 A JP6390079 A JP 6390079A JP 6390079 A JP6390079 A JP 6390079A JP S55157004 A JPS55157004 A JP S55157004A
Authority
JP
Japan
Prior art keywords
program
car
deterioration
written
reliability
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
JP6390079A
Other languages
Japanese (ja)
Inventor
Masahiro Kawamura
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 JP6390079A priority Critical patent/JPS55157004A/en
Publication of JPS55157004A publication Critical patent/JPS55157004A/en
Pending legal-status Critical Current

Links

Landscapes

  • Feedback Control In General (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

PURPOSE: To make the program change easy corresponding to a deterioration of sensor, to assure the reliability and low cost, by providing RAM and cassette type tape recorder storing a program controlling system.
CONSTITUTION: When the key switch of a car is operated to apply power supply, a control circuit 6 is started from CPU1, the optimum program corresponding to the deterioration of sensor is selected, and a series of program is written in RAM2 via the control circuit 6. After the end of write-in, the system control for car is made according to the program stored in this RAM2. A plurality of the said programs are prepared by using a cassette tupe tape recorder 7, the cost down can be made and since the progtams are written in newly at the system control start of a car, the reliability can be increased.
COPYRIGHT: (C)1980,JPO&Japio
JP6390079A 1979-05-25 1979-05-25 Digital control unit for automobile Pending JPS55157004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6390079A JPS55157004A (en) 1979-05-25 1979-05-25 Digital control unit for automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6390079A JPS55157004A (en) 1979-05-25 1979-05-25 Digital control unit for automobile

Publications (1)

Publication Number Publication Date
JPS55157004A true JPS55157004A (en) 1980-12-06

Family

ID=13242640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6390079A Pending JPS55157004A (en) 1979-05-25 1979-05-25 Digital control unit for automobile

Country Status (1)

Country Link
JP (1) JPS55157004A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664130A (en) * 1979-10-29 1981-06-01 Aisin Warner Ltd Control device for car by card
JPS63223901A (en) * 1987-03-13 1988-09-19 Hitachi Ltd In-vehicle control device
JPH0299746A (en) * 1988-10-04 1990-04-11 Hitachi Ltd Engine controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664130A (en) * 1979-10-29 1981-06-01 Aisin Warner Ltd Control device for car by card
JPH0336701B2 (en) * 1979-10-29 1991-06-03 Aisin Aw Co
JPS63223901A (en) * 1987-03-13 1988-09-19 Hitachi Ltd In-vehicle control device
JPH0299746A (en) * 1988-10-04 1990-04-11 Hitachi Ltd Engine controller

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