Title:
METHOD AND SYSTEM FOR CALCULATING ATKINSON CYCLE INTAKE AMOUNT OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/167220
Kind Code:
A1
Abstract:
A method for calculating the Atkinson cycle intake amount of an internal combustion engine, comprising: determining an intake stagnation point and the corresponding engine crank angle when an internal combustion engine piston is located at the intake stagnation point; calculating, according to the engine crank angle, the mass and partial pressure of the exhaust gas as well as the mass and partial pressure of the fresh gas within a cylinder, when the internal combustion engine piston is located at the intake stagnation point; during the period of time from the intake stagnation point to the closing of an intake valve, obtaining, according to the mass and partial pressure of the exhaust gas as well as the mass and partial pressure of the fresh gas calculated within the cylinder, the ratio of mass between the amount of gas pushed out of the cylinder by the piston, to the total amount of gas within the cylinder at the intake stagnation point; and calculating, according to the mass ratio obtained, the intake amount of the fresh gas within the cylinder when the intake valve is closed. The Atkinson cycle intake amount may be automatically and accurately calculated by this method. Further disclosed is a system for calculating the Atkinson cycle intake amount of an internal combustion engine.
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Inventors:
HE YU (CN)
LIAN XUETONG (CN)
LIN SICONG (CN)
LIU JUJIANG (CN)
LIAN XUETONG (CN)
LIN SICONG (CN)
LIU JUJIANG (CN)
Application Number:
PCT/CN2017/078754
Publication Date:
October 05, 2017
Filing Date:
March 30, 2017
Export Citation:
Assignee:
GUANGZHOU AUTOMOBILE GROUP CO (CN)
International Classes:
F02D41/18
Foreign References:
| CN1657755A | 2005-08-24 | |||
| CN1214104A | 1999-04-14 | |||
| CN102062005A | 2011-05-18 | |||
| CN1823217A | 2006-08-23 | |||
| CN1701173A | 2005-11-23 | |||
| US4920789A | 1990-05-01 | |||
| JP2010133426A | 2010-06-17 |
Attorney, Agent or Firm:
PSHIP FIRM, LLC (CN)
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