CARBURETOR ENGINE CONTROL UNIT

For an engine to function at full capacity, it is necessary to optimize the mixture of intake air and fuel (A/F) in response to continuous fluctuations in driving conditions. Until now, the quantity of intake air has been controlled by several solenoid valves for ON-OFF operation. The authors have developed a highly accurate carburetor control unit which controls the quantity of intake air by the use of a linear solenoid. The control unit receives information about oxygen concentration, vacuum pressure, engine revolution, vehicle velocity and other sensors, then judges driving conditions by calculating these values and determining each actuator's operation. In this way, the control unit decreases injurious emissions of exhaust gas and improves fuel consumption and drivability. Additionally, the unit continuously monitors all sensors and actuators and causes a warning lamp to light and starts failsafe functions for maintaining safety if a fault is detected.

• Supplemental Notes:
  • Order as PB89-150486/WTS.
• Corporate Authors:

  Nippon Electric Company Limited

  Tokyo,   Japan 
• Authors:
  • YAMASHITA, S
  • KUDO, M
  • Ohara, M
• Publication Date: 1988-11

Language

• Japanese

Media Info

• Pagination: p. 173-178
• Serial:
  • NEC Technical Journal
  • Volume: 41
  • Issue Number: 13
  • Publisher: Nippon Electric Company Limited

Subject/Index Terms

• TRT Terms: Air intakes; Automotive engineering; Carburetors; Electronic control; Variables; Vehicle power plants
• Old TRIS Terms: Automobile engines
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00484576
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Jun 30 1989 12:00AM