Title:
エンジンの燃料噴射量制御装置
Document Type and Number:
Japanese Patent JP6389791
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately estimate an intake amount which is introduced into a combustion chamber by employing an α-N system, and to suitably control a fuel injection amount on the basis of the estimated intake amount.SOLUTION: An electronic control device (ECU) 20 estimates an intake amount (Ga) on the basis of a throttle opening (TA) and an engine rotation speed (NE), and controls an injector 4 on the basis of a fuel injection amount (TAU) which is calculated from the Ga. The ECU 20 acquires a current ISC flow rate with respect to a current ISC control amount by referring to ISC flow rate characteristic data at the operation of an engine, acquires a first intake amount (GaA) corresponding to the TA and the NE when the ISC flow rate reaches a minimum value by referring to a first intake amount map, acquires a second intake amount (GaB) corresponding to the TA and the NE when the ISC flow rate reaches a maximum value by referring to a second intake amount map, and estimates the current Ga by interpolating a difference between the GaA and the GaB from a relationship of the current ISC flow rate with respect to the maximum value and the minimum value.
Inventors:
Toshio Nishio
Seiji Kondo
Seiji Kondo
Application Number:
JP2015075574A
Publication Date:
September 12, 2018
Filing Date:
April 02, 2015
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F02D45/00; F02D41/08; F02D41/18; F02D41/34
Domestic Patent References:
| JP6321339A | ||||
| JP2013113258A |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office