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Humidity based control system for an internal combustion engine

A control system, technology of internal combustion engine, applied in the direction of engine control, internal combustion piston engine, electrical control, etc.

Active Publication Date: 2010-11-03
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to geographic location, seasonal changes and / or other environmental factors, it is not possible for an internal combustion engine to always operate under the same set conditions

Method used

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  • Humidity based control system for an internal combustion engine
  • Humidity based control system for an internal combustion engine
  • Humidity based control system for an internal combustion engine

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Embodiment Construction

[0015] In fact, the following descriptions of the preferred embodiments are only exemplary, and are by no means intended to limit the content, application fields and uses of the present invention. The term module or device as used herein means an application specific integrated circuit (ASIC), an electronic circuit, a processor (common, dedicated, or group ) and memory devices, a combinational logic circuit, and / or other suitable components that can perform the described functions.

[0016] According to the invention, the humidity-based control system compensates for atmospheric conditions when the internal combustion engine is operating. More specifically, humidity-based control systems determine a humidity level based on various sensor data and adjust ignition timing and dilution of the air-fuel mixture based on the humidity level.

[0017] Such as figure 1 As shown, the functional block diagram of an internal combustion engine system 100 includes an internal combustion e...

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Abstract

A humidity based control system for an internal combustion engine includes a calculation module and a calibration module. The calculation module determines a humidity of air used in a combustion process of the internal combustion engine. The control module selectively controls spark timing and exhaust dilution in the internal combustion engine based on the humidity.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 842,512, filed September 5, 2006. The disclosures of the aforementioned applications are incorporated herein by reference. technical field [0003] The present invention relates to an internal combustion engine, and more particularly to a method for improving combustion economy and operating performance by controlling ignition timing and exhaust gas dilution. Background technique [0004] The efficiency of an internal combustion engine can be controlled by adjusting the timing of the ignition and the dilution of the exhaust gas produced by the combustion of the internal combustion engine. Ignition timing can be defined as the generation of spark at a specific moment at a certain position of the piston relative to the combustion chamber. The preferred ignition timing occurs when the internal combustion engine has maximum power output. The outpu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D43/00
CPCF02D41/005Y02T10/47F02P5/04F02D2200/0418F02D13/0219Y02T10/40
Inventor L·A·托滕M·W·莱费尔曼P·R·霍扎克J·A·塞尔
Owner GM GLOBAL TECH OPERATIONS LLC