1997-02-24

Application of Vehicle Equipped with Ionic Current Detection System for the Engine Management System 970032

An in-vehicle detecting apparatus has been developed which detects an ion current to monitor the combustion condition of each cylinder of the spark ignition internal combustion engine. This apparatus uses the spark plug electrode as an ion probe, and applies, as bias power, a very low ignition energy accumulated in the ignition coil. Thus it has the feature of requiring no particular modification on the engine side except a minor revision of the ignition system and addition of a detection module.
This paper presents the construction and operation of this detection apparatus; in-engine evaluation and consideration on misfire and knocking level detecting performance; and consideration on effects of various factors on ion current values detected. In addition, data on the possibility of detecting an air-fuel ratio is reported.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Multipoint Spark Ignition for Lean Combustion

852092

View Details

TECHNICAL PAPER

Optical Investigations on a Multiple Spark Ignition System for Lean Engine Operation

2016-01-0711

View Details

TECHNICAL PAPER

Ignition Enhancement in a Two-Stroke Spark-Ignition Engine

951780

View Details

X