Title:
A control device of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6070980
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To minimize pumping loss (or an engine brake action) during coast travel while securing negative pressure to be supplied to a brake booster.SOLUTION: When starting fuel cut to temporarily stop fuel supply to a cylinder of an internal combustion engine, operation to gradually reduce the opening of a throttle valve is performed so that negative pressure in an intake passage on the downstream side of the throttle valve approximates a target value for negative pressure to be supplied to the brake booster. Then, operation to increase the opening of the throttle valve again is started before the negative pressure to be actually supplied to the brake booster reaches the target value.
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Inventors:
Nakano Hideshige
Application Number:
JP2012189364A
Publication Date:
February 01, 2017
Filing Date:
August 30, 2012
Export Citation:
Assignee:
Daihatsu Motor Co., Ltd.
International Classes:
F02D9/02; F02D29/02; F02D41/12
Domestic Patent References:
| JP2009161121A | ||||
| JP2004084513A | ||||
| JP2001355486A | ||||
| JP2013075540A | ||||
| JP2013231427A | ||||
| JP3536717B2 |
Foreign References:
| US20120116656 |
Attorney, Agent or Firm:
Kazuhiro Akazawa
Takeshi Miyazawa
Takeshi Miyazawa