Title:
DEVICE AND METHOD FOR CONTROLLING A TEMPERATURE OF A PRECHAMBER INCLUDED IN AN IGNITION DEVICE OF AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2020/255647
Kind Code:
A1
Abstract:
The present subject matter relates to a control unit and a method for controlling the temperature of a fuel-fed prechamber of an ignition device included in an internal combustion engine. In order to avoid inadmissible high temperatures of the prechamber, a targeted injection is introduced into the main combustion chamber during the compression stroke and/or into the prechamber depending on the prechamber temperature. Introducing an injection into the main combustion chamber at the end of the compression stroke can reduce the temperature of the gas mixture in/around the prechamber and therefore help to control the prechamber temperature at moderate increased temperatures without negatively affect the particle emissions. Hence, a cooling injection directly into the prechamber, which may cause drawbacks regarding particle emissions, is only necessary when the prechamber temperature is strongly increased.
Inventors:
YONEYA NAOKI (DE)
SAUERLAND HENNING (DE)
SARUWATARI MASAYUKI (JP)
SAUERLAND HENNING (DE)
SARUWATARI MASAYUKI (JP)
Application Number:
PCT/JP2020/020777
Publication Date:
December 24, 2020
Filing Date:
May 26, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02M45/08; F02B19/10; F02M61/14
Foreign References:
| JP2018091267A | 2018-06-14 | |||
| US20160252030A1 | 2016-09-01 | |||
| JP2004036424A | 2004-02-05 | |||
| JP2019183815A | 2019-10-24 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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