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Compressor outlet pressure control for improved engine speed stability and performance using compressor recirculation valve and turbocharger wastegate

A turbocharger, outlet pressure technology, applied in engine control, machine/engine, electrical control, etc., can solve problems such as limitations

Pending Publication Date: 2020-09-29
CUMMINS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the intake throttle is close to the wide open position, valve dynamics dictates little change in flow across the valve, which limits the ability to use the intake throttle to control engine speed

Method used

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  • Compressor outlet pressure control for improved engine speed stability and performance using compressor recirculation valve and turbocharger wastegate
  • Compressor outlet pressure control for improved engine speed stability and performance using compressor recirculation valve and turbocharger wastegate
  • Compressor outlet pressure control for improved engine speed stability and performance using compressor recirculation valve and turbocharger wastegate

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Embodiment Construction

[0009] For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings, and specific language will be used to describe the same. It should be understood, however, that no limitation of the scope of the invention is thereby intended, and that any changes and further modifications in the illustrated embodiments are contemplated herein and the invention as would generally occur to a person skilled in the art to which the invention pertains. Any further application of the principle.

[0010] refer to figure 1 , schematically illustrates a system 100 for controlling a turbocharger 102 . The system 100 includes an internal combustion engine 114, which may be any type of engine including at least a compression ignition engine, a spark ignition engine, a diesel engine, a gasoline engine, a natural gas engine, and combinations thereof. Engine 114 exhausts exhaust gas 112 through exhaust manif...

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PUM

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Abstract

Systems, methods and apparatus are disclosed for producing a target compressor outlet pressure that is based on a desired pressure differential across an intake throttle of an internal combustion engine and an intake manifold pressure by opening or closing a compressor recirculation valve and a turbocharger wastegate to commanded positions based on the target compressor outlet pressure.

Description

Background technique [0001] Certain types of engines have uncertainties in combustion due to various noise factors such as fuel quality and environmental conditions. For example, with lean-burn natural gas engines, changes in fuel quality and environmental conditions can be particularly problematic. Steady-state brake thermal efficiency can be improved by minimizing pressure loss across the intake throttle. However, when the intake throttle is close to the wide-open position, valve dynamics dictates little change in flow across the valve, which limits the ability to use the intake throttle to control engine speed. Therefore, further technical developments are required in this field. Contents of the invention [0002] A unique method for providing a target pressure differential across an intake throttle (ie, engine boost or torque reserve) of an internal combustion engine by controlling the compressor recirculation valve position and turbocharger wastegate position to comma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/05F02D21/06F02D21/08F02D41/00F02M26/02F02M26/06
CPCF02B37/18F02B37/225F02D41/0007F02D2200/0406F02M26/05F02M26/06F02B37/162Y02T10/12
Inventor M·H·哈尔贝R·J·托马斯谢明峰
Owner CUMMINS INC
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