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Spark voltage limiting system for active fuel management

A fuel management and control system technology, applied in the direction of electric spark ignition controller, electrical control, engine ignition, etc., can solve the problems of scratching the cylinder wall, abrasive debris, increased oil consumption, etc.

Active Publication Date: 2011-05-11
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to holes in the insulator on the second electrode and to abrasive debris in the combustion chamber that can scratch the cylinder walls
Debris can cause premature piston ring and cylinder bore wear which can lead to increased oil consumption

Method used

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  • Spark voltage limiting system for active fuel management
  • Spark voltage limiting system for active fuel management
  • Spark voltage limiting system for active fuel management

Examples

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Embodiment Construction

[0044] The following description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses in any way. For purposes of clarity, the same reference numbers will be used in the drawings to refer to like elements. As used herein, the phrase "at least one of A, B, and C" should be construed to mean the logical expression "A or B or C" using a non-exclusive logical or. It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

[0045] As used herein, the term "module" refers to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared processor, dedicated processor, or group processor) and memory, a combination of Logic circuits, and / or other suitable components that provide the described functionality.

[0046] In the description below, the terms dwell, dwell time, and dwell period may refer to the amount of time tha...

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PUM

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Abstract

An engine control system for a vehicle includes a variable displacement module that deactivates N of M cylinders of an engine during a fuel management mode. N is an integer and M is an integer greater than 1. A spark control module generates a spark timing signal for the N cylinders based on a pre-dwell time and a fuel management dwell modifier during the fuel management mode. The spark control module reduces dwell time of the N cylinders during the fuel management mode based on the fuel management dwell modifier.

Description

technical field [0001] The present disclosure relates to ignition and fuel control systems, and more particularly to spark during active fuel management. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors, to the extent described in this Background section and to those described aspects which may not be prior art at the filing date, is neither expressly nor impliedly admitted to be relative to the present disclosure. language prior art. [0003] Active Fuel Management TM (Active Fuel Management, AFM) or variable displacement allows the displacement of an internal combustion engine (ICE) to vary by deactivating one or more cylinders. Deactivation of the cylinder(s) improves fuel economy of the vehicle. During light load conditions, an AFM mode may be enabled to deactivate cylinders of the engine. Deactivated cylinders may be reactivate...

Claims

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Application Information

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IPC IPC(8): F02D43/00
CPCF02D37/02F02D41/0087F02D2011/102F02D2041/0012F02D2200/501F02D2200/503F02P3/0456
Inventor R·W·里格尔Y·苏瓦R·M·沃兹尼亚克A·L·马克斯
Owner GM GLOBAL TECH OPERATIONS LLC