Title:
MISFIRE DETERMINATION DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2022029185
Kind Code:
A
Abstract:
To provide a misfire determination device for an internal combustion engine capable of suppressing deterioration of accuracy of misfire determination.SOLUTION: A misfire determination device for an internal combustion engine includes: an engine rotating speed acquisition part 111 acquiring a rotating speed of a crankshaft of the engine; a damper rear-stage rotating speed acquisition part 114 acquiring a damper rear-stage rotating speed that is a rotating speed of a carrier shaft connected to a driving wheel side of the crankshaft via a damper; a communication path selection part 113 selecting a path with higher communication reliability out of a first path directly acquiring the damper rear-stage rotating speed from a motor ECU controlling a motor in cooperation with the carrier shaft and a second path acquiring the damper rear-stage rotating speed from the motor ECU via an HV-ECU; a resonance influence component calculation part 115 calculating a resonance influence component on the basis of the rotating speed and the acquired damper rear-stage rotating speed; and a misfire determination part 116 determining misfire of the engine on the basis of a misfire determination rotating speed obtained by subtracting the resonance influence component from the rotating speed.SELECTED DRAWING: Figure 3
Inventors:
SUGIMOTO HITOSHI
Application Number:
JP2020132407A
Publication Date:
February 17, 2022
Filing Date:
August 04, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D45/00; B60K6/445; B60W10/06; B60W20/15; F02D29/06
Attorney, Agent or Firm:
Aoki Atsushi
Shinji Mihashi
Junichi Tsuruta
Koichi Ito
Nobuo Sekine
Tsutomu Kono
Shinji Mihashi
Junichi Tsuruta
Koichi Ito
Nobuo Sekine
Tsutomu Kono