Title:
ＬＰＧエンジンシステムの制御装置
Document Type and Number:
Japanese Patent JP7459837
Kind Code:
B2
Abstract:
To provide a control device for a LPG engine system that adjusts the amount of fuel with a fuel mixer having a step motor and an injector, the LPG engine system capable of achieving a target air fuel ratio in a shorter time even if there is a dropping portion in the amount of fuel according to the number of steps of the step motor.SOLUTION: A control device comprises a base fuel amount calculation unit for calculating a base step number and a base injection amount, an air-fuel ratio correction amount calculation unit, a step number correction unit for updating a corrected step number, and an actuator control unit for controlling a step motor and an injector. The step number correction unit, in the case of a lean continuous state, inhibits increase in amount according to an air-fuel ratio correction amount (air-fuel ratio correction coefficient), and updates the corrected step number at every first predetermined timing until the state is switched to a rich state. The step number correction unit, in the case of a rich continuous state, inhibits decrease in amount according to the air-fuel ratio correction amount, and updates the corrected step number at every second predetermined timing until the state is switched to a lean state.SELECTED DRAWING: Figure 10
Inventors:
Yoshihiro Takikawa
Application Number:
JP2021079622A
Publication Date:
April 02, 2024
Filing Date:
May 10, 2021
Export Citation:
Assignee:
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
International Classes:
F02D19/02; F02B43/00; F02D41/34; F02M21/02
Domestic Patent References:
| JP2259263A | ||||
| JP5010212A | ||||
| JP56124661A |
Attorney, Agent or Firm:
Patent Attorney Corporation Okada International Patent Office