Title:
ENGINE
Document Type and Number:
Japanese Patent JP2020133491
Kind Code:
A
Abstract:
To suppress occurrence of knocking due to ω tumbling, in an engine in which ω tumbling is generated in a cylinder at the latter half of a compression stroke in a predetermined operation state such as high rotation and high load.SOLUTION: An engine has a knocking determination unit, an injection device, and an injection control unit. The injection device is configured to be able to execute ω suppression injection F2 of injecting a jet containing a velocity component in an exhaust direction into a cylinder, at predetermined timing after the latter half of a compression stroke s2 and before ignition I is performed by a spark plug. The injection control unit controls the injection device so as not to perform the ω suppression injection F2 when it is determined that the engine is not in a knocking state, and so as to perform the ω suppression injection F2 when it is determined that the engine is in the knocking state.SELECTED DRAWING: Figure 2
Inventors:
NAKANO TAKAAKI
SAKUMA TAKASHI
SAKUMA TAKASHI
Application Number:
JP2019027868A
Publication Date:
August 31, 2020
Filing Date:
February 19, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02D45/00; F02B19/12; F02B23/10; F02B31/00; F02D41/34; F02D43/00; F02M51/00; F02M61/16; F02P13/00
Domestic Patent References:
| JP2015124659A | 2015-07-06 | |||
| JP6206285B2 | 2017-10-04 | |||
| JP2009174344A | 2009-08-06 | |||
| JP2016186260A | 2016-10-27 |
Attorney, Agent or Firm:
Tsuyoshi Yamada
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita