Title:
CONTROL DEVICE FOR ENGINE AND ENGINE SYSTEM
Document Type and Number:
Japanese Patent JP2020190200
Kind Code:
A
Abstract:
To timely remove deposits while accurately predicting a deposit accumulation amount in an injection hole of a fuel injection valve.SOLUTION: An ECU 20 includes a deposit estimation part 27 for performing processing to estimate a deposit accumulation amount in an injection hole 15B of an injector 15 (step S2), and a fuel pressure control part 26 for allowing the fuel pressure rise of the injector 15 when the deposit accumulation amount is equal to or greater than a predetermined value. The deposit estimation part 27 integrates unit accumulation amounts as deposit accumulation amounts per unit time to find the deposit accumulation amount, and corrects each of the unit accumulation amounts according to a fuel injection timing for the injector 15. The fuel pressure control part 26 makes such a correction that, compared to the unit accumulation amount at the time the fuel injection timing is set as a first timing deviating a first period from the top dead center of a piston 5, the unit accumulation amount at the time it is set as a second timing deviating a second period longer than the first period therefrom, becomes small.SELECTED DRAWING: Figure 16
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Inventors:
TAKEMOTO KAZUHIRO
ITO MICHIO
SUEOKA KENYA
NISHIMURA KAZUHIRO
HATAMA YASUSHI
TSUNODA MASATAKA
NISHIDA MASAMI
ITO MICHIO
SUEOKA KENYA
NISHIMURA KAZUHIRO
HATAMA YASUSHI
TSUNODA MASATAKA
NISHIDA MASAMI
Application Number:
JP2019094273A
Publication Date:
November 26, 2020
Filing Date:
May 20, 2019
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02D41/04; F02B77/04; F02D41/02; F02D41/22; F02D45/00; F02F3/26; F02M61/18
Domestic Patent References:
| JP2003227375A | 2003-08-15 | |||
| JP2006183469A | 2006-07-13 | |||
| JP2019039326A | 2019-03-14 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Haruhiro Hirata
Masataka Otani
Haruhiro Hirata