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Target wheel position detection systems

A technology of control modules and target wheels, which is applied to the layout of multiple different prime movers, electrical controls, control devices, etc. of general power plants

Active Publication Date: 2013-05-08
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

N is an integer

Method used

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  • Target wheel position detection systems
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Embodiment Construction

[0047] The control module can detect the position of the crankshaft target wheel (engine position) at various intervals through the crankshaft sensor. As an example, the control module may detect engine position at intervals greater than, equal to, or less than 90°. An interval greater than or equal to 90° may be referred to as a low-resolution interval. A separation of less than 90° may be referred to as a high-resolution separation.

[0048] The crankshaft target wheel may for example have 58 teeth; each tooth is associated with a rotation of roughly 6°. Fine resolution of engine position can be provided by monitoring in 6° increments. By providing fine resolution, improved position, velocity, acceleration and jerk information about the engine can be generated.

[0049]The pitch (or tooth width) between the teeth of the crankshaft target wheel is generally not the same. Variations in spacing may exist. These variations may be due to manufacturing tolerances, part-to-par...

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Abstract

A control module for a vehicle includes a time recording module that stores timestamps that correspond to each of N teeth of a target wheel of the vehicle in memory. N is an integer. A position module generates M angular positions based on the timestamps. M is an integer greater than one. Each of the M angular positions corresponds to a space between adjacent ones of the N teeth. A position estimator determines position of the target wheel based on the M positions.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 103,700, filed October 8, 2008. The disclosure of the above application is hereby incorporated by reference. technical field [0003] The present invention relates to vehicle control systems, and more particularly to target wheel position detection. Background technique [0004] The statements in this section merely provide background information related to the present invention and may not constitute prior art. [0005] The engine control system monitors the crankshaft (engine) position. Engine speed and acceleration may be determined based on engine position. For example only, fueling, ignition, and throttle position may be adjusted based on engine position, speed, and / or acceleration. [0006] A crankshaft position monitoring system typically includes a control module, a crankshaft sensor, and a target wheel connected to or as part o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W40/12F02D29/02F02D43/00B60W10/10
CPCB60W20/00Y02T10/6286B60W2510/0685Y02T10/6226B60W2710/105F02D41/009B60W10/10B60W10/06B60K6/485F02D2041/1417B60L2240/486B60W10/08B60K6/48B60K2006/4833Y02T10/62B60W10/02B60W2510/0283B60W2510/06B60W2710/02B60W20/15
Inventor J·R·贝尔德霍N·J·卡尔维特D·S·马修斯M·R·格赖姆斯
Owner GM GLOBAL TECH OPERATIONS LLC