Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/099064
Kind Code:
A1
Abstract:
A plurality of injection rate waveforms include an isobaric injection rate waveform for performing a control so that the cylinder pressure in a combustion chamber (10a) is equal to or less than the maximum cylinder pressure, the isobaric injection rate waveform involving injection in two stages; i.e., a first-stage injection and a second-stage injection, the rate of change in the increase in the injection rate in the first-stage injection being greater than the rate of change in the second-stage injection. The injection rate waveform of the first-stage injection has a portion in which the injection rate increases from the start of the first-stage injection and reaches the maximum injection rate, and a portion in which the injection rate decreases from the maximum injection rate. The injection rate waveform of the second-stage injection is such that the injection rate at the start of the second-stage injection is greater than zero, and has a portion in which the injection rate increases from the start of the second-stage injection and reaches the maximum injection rate, and a portion in which the injection rate decreases from the maximum injection rate. A control unit (30) performs a control so that injection is performed according to the isobaric injection rate waveform when the degree of ignition delay, acquired by an ignition acquisition unit (30), is smaller than a threshold value, and an output request made to an internal combustion engine (10) is a high-output request for an output higher than a predetermined output.
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Inventors:
TOMIDA YASUFUMI (JP)
Application Number:
PCT/JP2016/086198
Publication Date:
June 15, 2017
Filing Date:
December 06, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02D41/38; F02M45/08
Foreign References:
| JP2009085117A | 2009-04-23 | |||
| JPH10259753A | 1998-09-29 | |||
| JP2013209943A | 2013-10-10 | |||
| JP2014227905A | 2014-12-08 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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