Invention Grant
- Patent Title: System and method for improved gas exchange in cylinder deactivation applications
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Application No.: US15240565Application Date: 2016-08-18
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Publication No.: US09970338B2Publication Date: 2018-05-15
- Inventor: Matthew G. Foster , Keith A. Confer , Wayne R. Moore
- Applicant: DELPHI TECHNOLOGIES IP LIMITED
- Applicant Address: BB
- Assignee: DELPHI TECHNOLOGIES IP LIMITED
- Current Assignee: DELPHI TECHNOLOGIES IP LIMITED
- Current Assignee Address: BB
- Agent Joshua M. Haines
- Main IPC: F01L13/00
- IPC: F01L13/00 ; F01L1/08 ; F02D13/06

Abstract:
A cylinder deactivation system includes an intake cam follower assembly, an exhaust cam follower assembly, an exhaust cam, and a controller. The intake cam follower assembly is used to open an intake engine valve and is switchable to operate in one of an active state and a deactive state. The exhaust cam follower assembly is used to open an exhaust engine valve and is switchable to operate in one of a primary lift state and a secondary lift state. The exhaust cam includes a primary lift cam lobe and a secondary lift cam lobe and is used to actuate the exhaust cam follower assembly in the primary lift state and in the secondary lift state. The controller is used to open the exhaust engine valve during the deactive combustion cycle in advance of the opening of the intake engine valve that occurs during the subsequent active combustion cycle.
Public/Granted literature
- US20180051601A1 System and Method for Improved Gas Exchange in Cylinder Deactivation Applications Public/Granted day:2018-02-22
Information query