Title:
AIR RELATIVE CHARGE CONTROL METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/239045
Kind Code:
A1
Abstract:
Disclosed is an air relative charge control method, which is applied to a vehicle with a variable compression ratio engine. The method comprises: determining a preset center value of a closing angle of an air intake valve according to an actual compression ratio of a variable compression ratio engine; determining a target center value of the closing angle of the air intake valve on the basis of the preset center value of the closing angle of the air intake valve and an actual center value of the closing angle of the air intake valve; determining a conversion coefficient of air relative charge on the basis of the actual compression ratio and the target center value of the closing angle of the air intake valve; and determining the actual air relative charge according to the pressure of an air intake manifold and the pressure of exhaust gas of the variable compression ratio engine, and the conversion coefficient, such that the air relative charge in a cylinder can be accurately calculated under all operating conditions of the VCR engine, the error between the fresh air relative charge actually entering the cylinder and the relative charge calculated by an electronic control unit of a vehicle is reduced, and the stable operation of the engine is ensured. Further disclosed is an air relative charge control apparatus.
Inventors:
CHEN LIMING (CN)
ZUO KUNFENG (CN)
WANG WENBIN (CN)
LAI HAIPENG (CN)
XING HUAFENG (CN)
SHANG PU (CN)
DAI SHASHA (CN)
CHEN WEI (CN)
LI XIANKUN (CN)
YIN JIANMING (CN)
ZHANG WENXIAN (CN)
ZHANG ZHEN (CN)
YANG XIAOMENG (CN)
ZUO KUNFENG (CN)
WANG WENBIN (CN)
LAI HAIPENG (CN)
XING HUAFENG (CN)
SHANG PU (CN)
DAI SHASHA (CN)
CHEN WEI (CN)
LI XIANKUN (CN)
YIN JIANMING (CN)
ZHANG WENXIAN (CN)
ZHANG ZHEN (CN)
YANG XIAOMENG (CN)
Application Number:
PCT/CN2021/096284
Publication Date:
December 02, 2021
Filing Date:
May 27, 2021
Export Citation:
Assignee:
GREAT WALL MOTOR CO LTD (CN)
International Classes:
F02D13/02; F02D15/04; F02D41/00
Foreign References:
| CN112761798A | 2021-05-07 | |||
| CN105626281A | 2016-06-01 | |||
| CN101040113A | 2007-09-19 | |||
| JP5038638B2 | 2012-10-03 | |||
| US5282449A | 1994-02-01 |
Attorney, Agent or Firm:
BEIJING RUN ZEHENG INTELLECTUAL PROPERTY LAW FIRM (CN)
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