Title:
電子制御装置及び燃焼状態検知システム
Document Type and Number:
Japanese Patent JP7425923
Kind Code:
B2
Abstract:
The present invention calculates the rotation speed or rotation time for a certain angle of a crank shaft on the basis of the variation in detection signals from a sensor of the crank shaft. Further, the present invention acquires information relating to the rotation speed or rotation time for at least two combustion cycles when combustion cylinders have been switched, and calculates a combustion phase on the basis of the rotation speed or rotation time. As a result, it becomes possible to detect a combustion state of an engine with high accuracy by using the sensor that measures the rotation of the crank shaft.
Inventors:
Toshihiro Aono
Osamu Mukaihara
Kotaro Ohki
Osamu Mukaihara
Kotaro Ohki
Application Number:
JP2023505088A
Publication Date:
January 31, 2024
Filing Date:
September 15, 2021
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F02D43/00; F02D45/00
Domestic Patent References:
| JP2020190234A | ||||
| JP2017206988A | ||||
| JP2010059883A |
Foreign References:
| CN111929067A | ||||
| US20100212632 |
Attorney, Agent or Firm:
Patent Attorney Corporation Shinyu International Patent Office
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