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Title: Simultaneously firing two cylinders of an even firing camless engine

Patent ·
OSTI ID:1126872

A valve control system includes an engine speed control module that determines an engine speed and a desired engine stop position. A piston position module determines a desired stopping position of a first piston based on the desired engine stop position. A valve control module receives the desired stopping position, commands a set of valves to close at the desired stopping position if the engine speed is less than a predetermined shutdown threshold, and commands the set of valves to reduce the engine speed if the engine speed is greater than the predetermined shutdown threshold.

Research Organization:
GM Global Technology Operations LLC, Detroit, MI, USA
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42415
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Number(s):
8,667,954
Application Number:
13/238,388
OSTI ID:
1126872
Country of Publication:
United States
Language:
English

References (14)

Method for starting a multicylinder internal combustion engine patent April 2000
Engine valve actuator assembly with dual hydraulic feedback patent May 2005
Piston engine with selectable firing order patent June 2006
Starting a camless engine from rest patent September 2006
Internal combustion engine shut-down for engine having adjustable valves patent July 2007
Engine starting for engine having adjustable valve operation patent October 2007
Engine automatic stop restart control apparatus, vehicle equipped with engine automatic stop restart control apparatus, and engine automatic stop restart method patent April 2008
Engine starting for engine having adjustable valve operation patent June 2009
Engine starting for engine having adjustable valve operation patent March 2010
Engine start control apparatus, engine start control method, and motor vehicle equipped with engine start control apparatus patent May 2011
Method for fueling an engine at start patent April 2013
Controlled starting and braking of an internal combustion engine patent-application September 2005
Method and System for Engine Control patent-application August 2012
Method and Device for Controlling an Internal Combustion Engine patent-application July 2013

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