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Altitude compensation of turbo-charger exhaust valve

A technology for exhaust valves and turbines, which is applied in the direction of machines/engines, combustion engines, internal combustion piston engines, etc., and can solve the problems of small opening degree, high intake pressure, exhaust valves cannot be opened, etc.

Inactive Publication Date: 2011-02-02
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reduced atmospheric pressure can lead to an unfavorable pressure difference across the exhaust valve diaphragm
Exhaust valves may fail to open, or may open less than required, for a given control system, resulting in a higher than acceptable intake pressure for the turbine

Method used

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  • Altitude compensation of turbo-charger exhaust valve
  • Altitude compensation of turbo-charger exhaust valve
  • Altitude compensation of turbo-charger exhaust valve

Examples

Experimental program
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Embodiment Construction

[0017] See now the attached drawings, especially figure 1 , which shows an exhaust valve control valve 10 according to the invention. The exhaust valve control valve 10 operates in a turbocharger system 12 of an internal combustion engine 14 .

[0018] The engine 14 is of known construction and includes a plurality of combustion cylinders 16, figure 1 Shown in is a combustion cylinder 16 . Pistons 18 are operatively disposed within each combustion cylinder 16 and are connected to a crankshaft 22 via piston rods 20 . At least one intake valve 24 and at least one exhaust valve 26 are located on each cylinder 16 . An intake valve 24 controls fluid communication between a combustion air system 28 and the combustion cylinder 16 and an exhaust valve 26 controls fluid communication between an exhaust system 30 and the combustion cylinder 16 . Those skilled in the art will readily appreciate that the engine 14 may have a spark-ignition configuration, a compression-ignition configu...

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PUM

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Abstract

The invention discloses an air evacuation valve of turbine booster system of engine, which is characterized by the following: comprising a valve chest, a spring and a spring seat on the valve aperture; setting the valve chest as a valve aperture and a valve rod; connecting to the valve aperture; connecting the spring; exerting spring force for the valve rod; possessing a assembling spring length for the spring; setting the valve chest as movable; changing the assembling length of the spring according to change of atmospheric pressure.

Description

technical field [0001] The present invention relates generally to a turbocharged internal combustion engine, and more particularly to a turbocharger system having an exhaust gate control valve for controlling the flow of exhaust gas to the turbocharger. gas flow. Background technique [0002] One factor limiting the performance of internal combustion engines is the amount of combustion air that can be delivered to the intake manifold for combustion in the engine cylinders. Usually, the atmospheric pressure is insufficient to provide the amount of air the engine needs to run efficiently. [0003] It is already known to use turbochargers in the intake air supply of internal combustion engines to increase the combustion air supplied to the combustion cylinders. Each turbocharger typically consists of a turbine with a turbine wheel driven by exhaust gases from the engine and one or more compressors with a compressor wheel that is boosted by a common turbocharger The turbochar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/12
CPCY02T10/144Y02T10/12
Inventor C·H·杜塔特
Owner CATERPILLAR INC