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Engine including cylinder deactivation assembly and method of control

An engine and engine assembly technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve problems affecting device response time, adverse effects of engine operation, etc.

Active Publication Date: 2010-07-28
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of air in the oil supply passages that supply pressurized oil to hydraulically actuated devices can affect device response time due to the compressibility of the air-oil mixture within the passages
Engine operation is adversely affected when hydraulic actuators operate in the presence of air in the oil circuit

Method used

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  • Engine including cylinder deactivation assembly and method of control
  • Engine including cylinder deactivation assembly and method of control
  • Engine including cylinder deactivation assembly and method of control

Examples

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Embodiment Construction

[0026] Embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the disclosure, its application and uses.

[0027] refer to figure 1 , the engine assembly 10 may include an engine block 12 , a first cylinder head 14 and a second cylinder head 16 , and a gas distribution system assembly 18 . The engine block 12 may define a plurality of cylinder bores 20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h in which the pistons 22 are disposed. The gas distribution system assembly 18 may include a deactivating lifter assembly 24, a non-deactivating lifter assembly 26, a valve actuation assembly 28, an intake valve 30, an exhaust valve 32, a camshaft 34, a cylinder deactivation assembly 36, and a control module 38 (see figure 2 ). The valve actuation assemblies 28 may each include a pushrod 40 and a rocker arm 42 .

[0028] Although a V-engine inc...

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PUM

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Abstract

A method of purging air from an oil passage in communication with a lifter assembly in an engine assembly may include isolating the oil passage from a pressurized oil source while the lifter assembly is engaged with a base region of a cam lobe to operate the first lifter assembly in the activated mode. The pressurized oil may be provided to the lifter assembly via the oil passage after the isolating when the lifter assembly is engaged with a lift region of the cam lobe. The lifter assembly may be maintained in the activated mode after the providing. Air may be purged from the oil passage based on the pressurized oil provided to the oil passage.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 147,320, filed January 26, 2009. The entire disclosure of this application is hereby incorporated by reference. technical field [0003] The present invention relates to engine valve system control, and more particularly to engine valve system control including cylinder deactivation mechanisms. Background technique [0004] This section provides background information related to the present disclosure which is not necessarily prior art. [0005] The engine assembly may include hydraulically actuated components such as deactivated valve lifters. The presence of air in the oil supply passages that provide pressurized oil to hydraulically actuated devices can affect device response time due to the compressibility of the air-oil mixture within the passages. Engine operation can be adversely affected when a hydraulic actuator operates with air in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L9/02
CPCF01L2105/00F01L1/146F01L13/0005F01L2800/05F01L1/24F01L2305/00
Inventor J·B·希克斯W·C·艾伯森M·斯塔宾斯基M·M·麦克唐纳德
Owner GM GLOBAL TECH OPERATIONS LLC