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No-start diagnostics for powertrain with enabled starter

A technology of power system and starter, which is applied in the direction of engine motor starting, engine starting, engine components, etc., which can solve the problems of complicated maintenance and repair work and inability to distinguish them

Active Publication Date: 2018-03-13
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional diagnostic methods often cannot distinguish one failure mode from another, complicating maintenance and repair efforts

Method used

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  • No-start diagnostics for powertrain with enabled starter
  • No-start diagnostics for powertrain with enabled starter
  • No-start diagnostics for powertrain with enabled starter

Examples

Experimental program
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Embodiment Construction

[0017] Referring to the drawings, wherein like reference numerals refer to the same or similar parts throughout the several views, figure 1 The power system 10 is schematically shown in . The powertrain 10 includes an internal combustion engine 12 and may also include a transmission 14 . As is known in the art, the engine 12 is operable to combust a mixture of air (arrow A) and fuel (arrow F) drawn from the sump 35 to produce engine torque (arrow T E ). Then, the engine torque (arrow T E ) is delivered to the transmission 14 via the drive shaft 13 via the clutch C1 , for example a friction clutch or a hydrodynamic torque converter.

[0018] The transmission 12 has an input member 15 and an output member 16 . The input member 15 is connectable to the engine 12 via clutch C1 , while a load, such as drive wheels 17 , a drive shaft or another load, is connected to the output member 16 . exist figure 1 In the exemplary embodiment of the present invention, the powertrain syste...

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PUM

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Abstract

A method diagnoses a no-start condition in a powertrain having an engine and a starter system operable for starting the engine. The starter system includes a battery, solenoid relay, starter solenoid,and starter motor. The method includes recording starter data over a calibrated sampling duration in response to a requested start event when the solenoid relay is enabled, including a cranking voltage and engine speed. If no battery current sensor is used, the method derives a resistance ratio using an open-circuit voltage and a minimum cranking voltage of the battery. When such a sensor is used, the method derives a battery and starter resistance. A fault mode of the starter system is then identified via a controller using the starter data and either the resistance ratio or the battery andstarter resistances. A control action executes that corresponds to the identified fault mode.

Description

technical field [0001] The present invention relates to a no-start fault diagnostic method and system for use in a powertrain system with a starter system that activates a controller. Background technique [0002] Conventional power systems typically include internal combustion engines that combust a mixture of fuel and air using reciprocating pistons disposed within corresponding engine cylinders. The combustion process generates engine torque on the drive shaft, which in turn is delivered to the transmission via a torque converter or friction clutch. The output member of the transmission ultimately acts on a load. When the powertrain is used to power a motor vehicle, the load may be in the form of a driven wheel set, or in the form of a propshaft, generator, conveyor, or other load in other powertrain configurations. [0003] In order for the engine to start, the engine flywheel must rotate from rest to above a threshold speed sufficient to start the fuel / air mixture int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/10F02N11/08
CPCF02N11/08F02N11/108F02N2200/044F02N2200/062F02N2200/022F02N2200/043F02N2200/0802
Inventor S·蒋X·杜
Owner GM GLOBAL TECH OPERATIONS LLC
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