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Valve operating system for a reciprocating internal combustion engine

A technology for internal combustion engines and operating systems, applied to internal combustion piston engines, combustion engines, engine components, etc., can solve expensive and other problems

Inactive Publication Date: 2013-03-20
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantageously, however, hydraulic control is expensive, since separate control circuits including control valves have to be provided for the intake and exhaust valves

Method used

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  • Valve operating system for a reciprocating internal combustion engine
  • Valve operating system for a reciprocating internal combustion engine
  • Valve operating system for a reciprocating internal combustion engine

Examples

Experimental program
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Embodiment Construction

[0018] Such as figure 2 As shown, engine 10 has cylinder head 12 that receives camshaft 14 . figure 1 A camshaft 14 driven by a sprocket 16 is shown. Such as figure 1 and figure 2 As shown, camshaft 14 has a plurality of cam lobes 18 that provide force impulse to open intake valve 30 and exhaust valve 34 . The intake valve 30 is driven by an intake valve operator 22 mounted on an intake valve rocker shaft 24 . Exhaust valves 34 are actuated by exhaust valve operators 26 mounted on exhaust rocker shafts 28 . The intake valve operator 22 includes a valve contactor 35 , and the exhaust valve operator 26 includes an exhaust valve contactor 32 .

[0019] The engine 10 is a reciprocating internal combustion engine, and further includes a piston 36 mounted on a connecting rod 40 and a combustion chamber 44 . Valves 30 and 34 are conventional mushroom valves that effectively deactivate engine power cylinders when valves 30 and 34 are held in a steady state closed position. Du...

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PUM

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Abstract

A cylinder valve operating system for an internal combustion engine includes a camshaft driving a number of intake and exhaust valve operators which may be selectively disabled through the operation of a valving system including a hydraulic phase shifter integrated with the camshaft and connected between a source of high pressure oil and at least the intake valve operators. The hydraulic phase shifter allows one group of valves, such as the exhaust valves, to be disabled before the other group of valves, typically the intake valves.

Description

technical field [0001] The present invention relates to reciprocating internal combustion engines having camshaft actuated poppet valves, and more particularly to cylinder valve operating systems that can selectively deactivate the valves in reciprocating internal combustion engines to effectively vary the displacement of the engine. Background technique [0002] Dual displacement engines known in the art feature the ability to deactivate the intake and exhaust valves of specific cylinders in order to increase fuel economy. One method of deactivating the valves involves hydraulic control of the valve actuation system. A disadvantage, however, is that hydraulic control is relatively expensive, since separate control circuits including control valves have to be provided for the intake and exhaust valves. In other words, electronically controlled valves must be provided to meter or limit the amount of oil entering the valve operators for both the intake and exhaust valves. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/34F01L9/02F01L13/00F02D13/02
CPCF01L1/267F01L1/34Y02T10/18F01L2810/02F02D13/06F01L2001/0476Y02T10/12F01L13/0005F02D17/02
Inventor 格雷格·P·麦克康维尔漪华·沈·巴伯马克·A·扎格特
Owner FORD GLOBAL TECH LLC