First and second spark plugs for improved combustion control

一种火花塞、燃烧室的技术，应用在配置有第一和第二火花塞的发动机系统领域，能够解决折衷困难等问题，达到减少限制、减小爆震的效果

Inactive Publication Date: 2007-09-19
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proposed combination of ethanol at high loads and gasoline at low loads makes this compromise more difficult since ethanol is more prone to pre-ignition than gasoline and gasoline is more prone to spark plug deposits than ethanol

Method used

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  • First and second spark plugs for improved combustion control
  • First and second spark plugs for improved combustion control
  • First and second spark plugs for improved combustion control

Examples

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Embodiment Construction

[0020] Figure 1 shows a cylinder of a multi-cylinder engine, and the intake and exhaust passages connected to the cylinder. In the embodiment shown in FIG. 1, the engine 10 can use two different types of fuel and / or two different types of injection. For example, the engine 10 may use a hydrocarbon fuel such as gasoline and another substance, which may be, for example, a fluid including alcohol such as ethanol and methanol, a mixture of gasoline and ethanol (for example, about 85 in E85). % Ethanol and 15% gasoline), a mixture of gasoline and methanol (for example, about 85% methanol and 15% gasoline in M85), a mixture of alcohol and water, a mixture of alcohol, water and gasoline, and so on. The "substance" referred to herein may include fluid or liquid, gas or vapor, solid, or a combination thereof. In some embodiments, a single injector (eg, direct injector) may be used to inject a mixture of two or more types of fuels and / or fluids (eg, gasoline and / or ethanol, methanol, water)...

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PUM

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Abstract

A method of operating an internal combustion engine has at least one combustion chamber including a first spark plug and a second spark plug, wherein the first spark plug is configured to operate at a higher temperature than the second spark plug, and the method comprises of varying at least a resulting ratio of an amount of a fuel and an amount of a fluid delivered to the combustion chamber responsive to a first condition. By selectively using different spark plugs, the pre-ignition and spark plug fouling can be reduced, and simultaneously limitation to some combination of a fuel and a fluid is reduced, thereby knock can be further diminished.

Description

Technical field [0001] The present invention relates to an engine system and an operating method thereof, in particular to an engine system equipped with first and second spark plugs. Background technique [0002] The engine can use various fuel supply forms to provide a desired amount of fuel for combustion in each cylinder. One type of fuel supply uses the port injectors of each cylinder to supply fuel to each cylinder. Another type of fuel supply uses direct injectors for each cylinder. [0003] In addition, engines using more than one type of fuel injection have been proposed. For example, Heywood et al. entitled "Calculations of Knock Suppression in Highly Turbocharged Gasoline / EthanolEngines Using Direct Ethanol Injection". And "Direct Injection Ethanol Boosted Gasoline Engine: Biofuel Leveraging for Cost Effective Reduction of Oil Dependence and CO2 Emissions" ("Direct Injection Ethanol Boosted Gasoline Engine: Biofuel Leveraging for Cost Effective Reduction of Oil Depende...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00F02P5/145F02P5/152F02P15/02
CPCF02P17/12F02P15/02F02P15/08
Inventor 约翰·D·拉塞尔迈克尔·安德列
Owner FORD GLOBAL TECH LLC
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