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Hydromechanical module for engine valve actuation system

A technology for hydraulic machinery, engine valves, used in non-mechanically actuated valves, engine components, combustion engines, etc.

Pending Publication Date: 2022-07-08
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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Method used

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  • Hydromechanical module for engine valve actuation system
  • Hydromechanical module for engine valve actuation system
  • Hydromechanical module for engine valve actuation system

Examples

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Embodiment Construction

[0011] refer to figure 1 , an internal combustion engine system 10 is shown according to one embodiment and includes an engine 12 having an engine housing or cylinder block 14 with a plurality of combustion cylinders 16 formed therein. Combustion cylinders 16 may include any number of cylinders in any suitable arrangement. The internal combustion engine system 10 further includes an intake system 18 configured to deliver intake air (or intake air potentially mixed with fuel) to the cylinders 16 . The intake system 18 may include an air inlet 20 , an intake manifold 22 and an aftercooler 32 . The compressor of the turbocharger 30 may be fluidly positioned between the air inlet 20 and the aftercooler 32 . The internal combustion engine system 10 further includes an exhaust system 24 configured to deliver exhaust gas from the cylinders 16 to the exhaust manifold 26 and, after spinning the turbine of the turbocharger 30 , and then to the exhaust outlet 28. An exhaust aftertrea...

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Abstract

An engine valve actuation system includes a hydro-mechanical valve actuation module having a first hydro-mechanical linkage and a second hydro-mechanical linkage each within different housing blocks of a housing. Each of the first and second hydromechanical linkages includes a cam follower piston in contact with a cam of the camshaft, and a valve actuation piston hydraulically co-acting with the respective cam follower piston. The hydromechanical valve actuation module may include a hydromechanical linkage for an intake valve, for an exhaust valve, and for engine braking.

Description

technical field [0001] The present disclosure relates generally to an engine valve actuation system, and more particularly to a hydromechanical valve actuation module. Background technique [0002] Modern internal combustion engines typically include multiple engine valve components associated with each combustion cylinder that must move quickly and reliably between open and closed positions during operation. Breather valves (including intake and exhaust valves) open and close during engine operation to allow fresh air, and sometimes air mixed with fuel, to enter the cylinders for combustion and exhaust exhaust, respectively. A camshaft driven in an engine gear train is typically used to rotate an engine cam that contacts a rocker arm that reciprocates to open and close engine valves at desired opening and closing timings. In general, the operating environment of the engine (and in particular the breather valve) tends to be quite harsh. Not only do the various components m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L9/14F01L1/344F01L13/00F01L13/06F01L1/047F01L1/08
CPCF01L9/14F01L1/3442F01L13/0005F01L13/06F01L1/047F01L1/08F01L2013/001F01L13/0036F01L2013/101F01L1/26
Inventor S·D·鲁森步姆J·C·克里格M·D·罗利
Owner CATERPILLAR INC