Title:
CONTROL DEVICE FOR VARIABLE VALVE SYSTEM ENGINE
Document Type and Number:
Japanese Patent JP3719074
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To avoid direct striking of high temperature gas against items in an intake system such as an air flow meter through contraflow of the intake system when an failure occurs at an electromagnetically actuated intake/exhaust valve.
SOLUTION: When failure occurs at one of an intake valve and an exhaust valve of a cylinder, the normal one is fixed in a closed state (S23, S25). Fuel injection and ignition are suspended (S26). A throttle is throttled according to the failure condition. In addition, a target intake air amount and fuel injection are increasingly corrected in the normal cylinder so as to obtain a target torque in the normal cylinder (S27). When failure occurs at both of the intake valve and exhaust valve in the same cylinder, the fuel injection and ignition are suspended on the concerned cylinder (S28). The throttle valve is forcibly throttled to substantially the minimum opening (S29).
More Like This:
Inventors:
Keisuke Fujiwara
Hatsoo Nagaishi
Hatsoo Nagaishi
Application Number:
JP34613499A
Publication Date:
November 24, 2005
Filing Date:
December 06, 1999
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01L1/46; F01L9/04; F02D13/02; F02D17/04; F02D41/22; F02D43/00; (IPC1-7): F02D41/22; F01L1/46; F01L9/04; F02D13/02; F02D17/04; F02D43/00
Domestic Patent References:
| JP11141364A | ||||
| JP11294209A | ||||
| JP10339192A | ||||
| JP10047028A |
Attorney, Agent or Firm:
Tomijio Sasashima
Previous Patent: COMMODITY STORAGE DEVICE FOR AUTOMATIC VENDING MACHINE
Next Patent: METHOD FOR OPERATING COKE DRY-QUENCHING APPARATUS
Next Patent: METHOD FOR OPERATING COKE DRY-QUENCHING APPARATUS