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Real-time adaptable random pre-ignition mitigation control

A controller and control system technology, applied in engine control, fuel injection control, electrical control, etc., to solve problems such as piston failure

Pending Publication Date: 2022-05-20
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potential for premature piston failure due to reaching the maximum allowable number of random pre-ignition events

Method used

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  • Real-time adaptable random pre-ignition mitigation control
  • Real-time adaptable random pre-ignition mitigation control
  • Real-time adaptable random pre-ignition mitigation control

Examples

Experimental program
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Embodiment Construction

[0078] In one or more embodiments of the present disclosure, a control system is provided that maintains a tolerable rate of stochastic pre-ignition (SPI) events in an engine. The affordability is achieved by adjusting the allowable torque of the engine. The affordability rate generally states that no piston in the engine is likely to fail due to a maximum allowable number of random pre-ignition events. In one or more embodiments, the control system may accommodate individual stochastic pre-ignition rates for each engine cylinder of a customer's individual engine. This adaptation is performed in real time and proportionally modulates the allowable torque.

[0079] refer to figure 1 , shows a schematic plan view illustrating the environment of a vehicle 90 according to one or more exemplary embodiments. Vehicle 90 generally includes an engine 92 and a control system 100 . The control system 100 includes one or more knock sensors 102 (one shown) and a controller 104 . Contr...

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PUM

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Abstract

The invention relates to real-time adaptable random pre-ignition mitigation control. The control system includes a knock sensor and a controller. The knock sensor is configured to generate a notification signal by sensing a plurality of engine cylinder events in an engine. A controller is electrically coupled to the knock sensor and is configured to detect a plurality of random pre-ignition events in response to a plurality of engine cylinder events, calculate a real-time rate of the plurality of random pre-ignition events, calculate a ratio of the real-time rate to an allowable rate of the engine, and transmit the ratio to the engine cylinder events. And adjust a current allowable torque of the engine in response to the ratio and the engine speed.

Description

technical field [0001] The present disclosure relates to systems and methods for a real-time adaptive stochastic pre-ignition intelligent mitigation control system. Background technique [0002] A stochastic pre-ignition (SPI) event occurs in gasoline-fueled internal combustion engines, where the air / fuel mixture in a cylinder ignites before the corresponding spark plug fires. A pre-ignition event is often followed by engine knock. Premature piston failure may result due to reaching the maximum allowable number of random pre-ignition events. Random events are events that occur unpredictably. However, allowable engine torque is a means of controlling the incidence of random pre-ignition events. [0003] What is desired is a technique for controlling the incidence of random pre-ignition events for each engine, vehicle, and customer system in an adaptable manner. Contents of the invention [0004] This article provides a control system. The control system includes a knoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/04F02D29/02
CPCF02D41/04F02D29/02F02D2200/1002F02D2200/101F02D35/02F02D2250/26F02D35/027F02D2041/286F02D41/1402F02D41/22G01L23/221F02D41/2487F02D41/2422
Inventor C·D·阿曼德
Owner GM GLOBAL TECH OPERATIONS LLC