The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
Mar. 30, 2017
Guangzhou Automobile Group Co., Ltd., Guangzhou, Guangdong, CN;
Yu He, Guangdong, CN;
Xuetong Lian, Guangdong, CN;
Sicong Lin, Guangdong, CN;
Jujiang Liu, Guangdong, CN;
GUANGZHOU AUTOMOBILE GROUP CO., LTD., Guangzhou, CN;
Abstract
A method for calculating Atkinson cycle intake flowrate of an internal combustion engine includes determining an intake stopping point and an engine crank angle corresponding to a piston position of the internal combustion engine at the intake stopping point; calculating mass and partial pressure of an exhaust gas and a fresh gas within a cylinder from the engine crank angle; obtaining a mass ratio of a quantity of gas pushed out of the cylinder by a piston to a total quantity of gas within the cylinder at the intake stopping point during a period of time starting from the intake stopping point until intake valve closure; and calculating intake flowrate of the fresh gas within the cylinder at the intake valve closure from the mass ratio obtained. Also disclosed is a system for calculating Atkinson cycle intake flowrate of an internal combustion engine.