Title:
METHOD AND DEVICE FOR CONTROLLING THE FUEL INJECTION OF AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/063191
Kind Code:
A1
Abstract:
The present subject-matter relates to a method and a control device for reducing unburned hydrocarbons and particle emissions of an internal combustion engine especially in cold engine conditions. The problem to be solved is to provide automatic generation of an injection profile that considers the requirements of different combustion modes in various operation points of an internal combustion engine. This is achieved by controlling the fuel injection by means of an injection profile comprising multiple fuel injections. The profile is generated by setting an injection signal to a positive value at predetermined time points of the injection cycle in which a calculated spray penetration length is smaller than or equal to a spray penetration length threshold, and resetting the injection signal to zero at predetermined time points of the injection cycle in which the calculated spray penetration length exceeds the spray penetration length threshold until a fuel amount calculated on the basis of the previously generated fuel injection profile exceeds a predetermined fuel amount.
Inventors:
JORG CHRISTIAN (JP)
Application Number:
PCT/JP2022/037304
Publication Date:
April 20, 2023
Filing Date:
October 05, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02D41/40; F02M51/00
Foreign References:
| US20110155097A1 | 2011-06-30 | |||
| JP2009133278A | 2009-06-18 |
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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