ELECTRICALLY-ASSISTED PRESSURE BOOSTING CONTROL METHOD AND SYSTEM FOR ENGINE

Title:

ELECTRICALLY-ASSISTED PRESSURE BOOSTING CONTROL METHOD AND SYSTEM FOR ENGINE

Document Type and Number:

WIPO Patent Application WO/2020/093665

Kind Code:

A1

Abstract:

An electrically-assisted pressure boosting control method for an engine. In the method, a one-way valve (4) and an air intake branch (5) connected in parallel with the one-way valve (4) are provided at an air intake channel (3) between a waste gas compressor (1) and an air intake manifold (2), and an auxiliary gas compressor (6) is provided at the air intake branch (5). The auxiliary gas compressor (6) is controlled to operate at a smoothly changing rotation speed according to actual engine parameters. Also disclosed is an electrically-assisted pressure boosting control system for an engine. The invention prevents compressed air from driving rotation of an impeller of an auxiliary gas compressor, reduces design and usage costs of the auxiliary gas compressor, and ensures stable performance of an engine.

Inventors:

CHEN JUNHONG (CN)
LIN TIEJIAN (CN)
HU GUOQIANG (CN)
DU YU (CN)
HUANG YONGPENG (CN)
YE YU (CN)
SANG HAILANG (CN)
WU KE (CN)

Application Number:

PCT/CN2019/084925

Publication Date:

May 14, 2020

Filing Date:

April 29, 2019

Export Citation:

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Assignee:

GUANGXI YUCHAI MACHINERY GROUP CO LTD (CN)

International Classes:

F02B37/12; F02B37/04; F02B37/14; F02B39/10

Foreign References:

CN109252942A	2019-01-22
GB2480240A	2011-11-16
CN106121878A	2016-11-16
CN106285917A	2017-01-04
CN101761383A	2010-06-30
JP2011007051A	2011-01-13

Other References: