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High Performance Engine Control System
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English
Abstract
The basic structure of a new engine control system for highly accurate air-fuel ratio control is introduced. Improved engine power and decreased fuel consumption are required for today's engines. Better air-fuel ratio control must be attained to set the air-fuel ratio to that of the maximum power and minimum fuel consumption.
In order to enhance the accuracy of the air-fuel ratio control, the air flow meter, air-fuel ratio sensor, and fuel supply device are improved in the new system. Accuracy is lost in conventional system owing to the sensors' deterioration over long-term use. So prevention of air flow meter deterioration and compensation of air-fuel ratio sensor deterioration are taken into consideration. Fuel atomization of the fuel supply device is improved in order to reduce the air-fuel ratio fluctuation in the transient operating state.
High power and decreased fuel consumption over long-term use are made possible with the new system.
Authors
Citation
Ohsuga, M. and Ohyama, Y., "High Performance Engine Control System," SAE Technical Paper 881154, 1988, https://doi.org/10.4271/881154.Also In
References
- Yanauchi T. Nogi T. Engine Control System for Lean Combustion SAE paper 870291 87 2
- Ohsuga M. Ohyama Y. Dust-proof Characteristics of a Bypass Flow Type Flowmeter Using a Hot Wire Bulletin of JSME 27 223 84 11
- Ueno S. Ichikawa N. Wide-Range Air-Fuel Ratio Sensor SAE paper 860409 86 2
- Ohsuga M. Ohyama Y. A Study on the Oxygen-Biased WideRange Air-Fuel Ratio Sensor for Rich and Lean Air-Fuel Ratios Sensors and Actuators 9 1986 287 300
- Ohsuga M. Ohyama Y. A Study on Liquid Atomization by Air Streams and Vibration Transactions of JSME (c) 53 495 87 11