Title:
可変圧縮比エンジンの始動制御装置
Document Type and Number:
Japanese Patent JP5811574
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain stable startability by sufficiently increasing an engine compression ratio upon initial explosion in the case where the outside air temperature is low, or the battery voltage is low, by lowering a second compression ratio in the initial cranking stage below a first compression ratio when initially exploded thereafter.SOLUTION: The start control device includes a variable compression ratio mechanism capable of changing the engine compression ratio. The target compression ratio in a first setting period ΔT1 including an initial explosion time t3 after start of cranking of the engine is set as predetermined at a first compression ratio CR1. The target compression ratio in a second setting period ΔT2 including a cranking initial stage prior to the first setting period ΔT1 is set at a second compression ratio CR2 lower than the first compression ratio CR1. Based on the engine state, the difference CR12 between the first compression ratio CR1 and the second compression ratio CR2 is set for calculating the second compression ratio CR2 based on the difference CR12 and the first compression ratio CR1.
More Like This:
Inventors:
Eiji Takahashi
Kamata Shinobu
Kamata Shinobu
Application Number:
JP2011090737A
Publication Date:
November 11, 2015
Filing Date:
April 15, 2011
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02D15/02; F02B75/32; F02D41/06
Domestic Patent References:
| JP2009299570A | ||||
| JP2009114973A | ||||
| JP2008115830A | ||||
| JP2004293411A |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tsuyoshi Hashimoto
Tomioka Kiyoshi
Tsuyoshi Hashimoto