Title:
INTAKE AIR CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3933115
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance fuel economy by advancing a starting time of fuel cut without applying an improper torque shock.
SOLUTION: A lift/operating angle variable mechanism is provided which makes an operating angle and valve lift amount of an intake valve variable. When a deceleration fuel cut condition in which fuel supply is stopped is satisfied (T1), a lift operating angle of the intake valve is immediately reduced toward a minimal value, and the fuel cut is started after a predetermined delay period ΔD3 from a time point T2 in which the lift operating angle is reduced to the minimal value (T3). After a predetermined delay period ΔD4, the lift operating angle is increased toward an idle reference value (T5).
Inventors:
Katsuhiko Kawamura
Application Number:
JP2003332749A
Publication Date:
June 20, 2007
Filing Date:
September 25, 2003
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02D13/02; F02D43/00; F01L1/34; F01L13/00; F02D9/02; F02D9/08; F02D41/00; F02D41/12; F02M51/00; F02D13/04; F02D13/08; (IPC1-7): F02D13/02; F02D41/12; F02D43/00
Domestic Patent References:
| JP2003172175A | ||||
| JP2001342878A | ||||
| JP8170552A | ||||
| JP5001578A |
Attorney, Agent or Firm:
Tsuyoshi Hashimoto
Hiromichi Kobayashi
Tomioka Kiyoshi
Hiromichi Kobayashi
Tomioka Kiyoshi