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Method and apparatus for controlling combustion noise in an internal combustion engine

An engine and combustion phasing technology, applied to internal combustion piston engines, combustion engines, engine components, etc., can solve problems such as limiting the rate of engine load increase, affecting vehicle drivability, and disadvantages.

Inactive Publication Date: 2016-05-04
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limiting the rate of fuel ramping limits the rate at which engine load can increase, adversely affecting vehicle drivability

Method used

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  • Method and apparatus for controlling combustion noise in an internal combustion engine
  • Method and apparatus for controlling combustion noise in an internal combustion engine
  • Method and apparatus for controlling combustion noise in an internal combustion engine

Examples

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Embodiment Construction

[0050] Referring now to the drawings, in which the illustrations are for the purpose of describing certain exemplary embodiments only and not for limitation, figure 1 is a schematic diagram of an internal combustion engine 10 and accompanying control module 5 constructed in accordance with an embodiment of the present disclosure. Exemplary engine 10 is configured to operate in one of a variety of combustion modes, preferably including a homogeneous charge compression ignition (HCCI) combustion mode and a spark ignition (SI) combustion mode. Engine 10 may be controlled to operate at a stoichiometric air-fuel ratio and an air-fuel ratio that is primarily lean of stoichiometry. The present disclosure can be applied to various internal combustion engine systems and combustion cycles.

[0051] Exemplary engine 10 includes a multi-cylinder direct injection four-stroke internal combustion engine having reciprocating pistons 14 movable within cylinders 15 to define variable volume co...

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Abstract

The present invention relates to a method and apparatus for controlling combustion noise in an internal combustion engine. An internal combustion engine operates in a homogeneous charge compression ignition combustion mode. A method for controlling an internal combustion engine in response to a fast transient event from a low load condition to a high load condition includes operating the engine with negative valve overlap between intake and exhaust valves, and determining a preferred combustion phase. A preferred EGR mass and a preferred intake valve timing corresponding to a preferred combustion phasing are determined. The first intake valve timing is determined in response to a difference between the preferred EGR mass and the actual EGR mass. The intake valve timing is controlled in response to a difference between the preferred intake valve timing and the first intake valve timing.

Description

technical field [0001] The present disclosure relates to an internal combustion engine configured to operate in a homogeneous charge compression ignition (HCCI) combustion mode. Background technique [0002] The statements in this section merely provide background information to which the disclosure is related. Accordingly, these statements do not constitute admissions of prior art. [0003] Spark ignition (SI) engines introduce an air / fuel mixture into each cylinder, which is compressed during the compression stroke and ignited by a spark plug. Compression ignition (CI) engines inject pressurized fuel into a combustion cylinder near top dead center (TDC) of the compression stroke, where the pressurized fuel ignites upon injection. Combustion in both SI and CI engines involves premixed or diffusion flames controlled by fluid mechanics. [0004] SI engines are capable of operating in a variety of different combustion modes, including a homogeneous SI combustion mode and a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D13/02F01L1/34
CPCF02B1/12F02D13/0207F02D13/0238F02D13/0265F02B2075/125F02D41/3035F02D2041/001F01L13/0036F01L2820/01F02M26/01F02D41/0062Y02T10/12Y02T10/40
Inventor J-M.康C-F.常H.允
Owner GM GLOBAL TECH OPERATIONS LLC
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