Invention Grant
- Patent Title: Catalyst temperature based valvetrain control systems and methods
- Patent Title (中): 基于催化剂温度的阀门控制系统和方法
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Application No.: US13226790Application Date: 2011-09-07
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Publication No.: US08707679B2Publication Date: 2014-04-29
- Inventor: Mike M. McDonald , William C. Albertson
- Applicant: Mike M. McDonald , William C. Albertson
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F01N3/00
- IPC: F01N3/00

Abstract:
A system for a vehicle includes a triggering module and a cylinder control module. The triggering module generates a trigger when a catalyst temperature is greater than a predetermined temperature. In response to the generation of the trigger, the cylinder control module: disables opening of an exhaust valve of a cylinder for an exhaust phase of a first combustion cycle of the cylinder; disables opening of the exhaust valve for N combustion cycles of the cylinder that follow the first combustion cycle; and enables opening of the exhaust valve for a second combustion cycle that follows the N combustion cycles. N is an integer greater than zero.
Public/Granted literature
- US20130055972A1 CATALYST TEMPERATURE BASED VALVETRAIN CONTROL SYSTEMS AND METHODS Public/Granted day:2013-03-07
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