Unlock instant, AI-driven research and patent intelligence for your innovation.

Minimum power consumption for cooling diagnostics based on cylinder deactivation

A technology of cylinder and diagnostic system, applied in the direction of engine cooling, electrical control, combustion engine, etc., can solve the problem that engine coolant cannot be released, etc.

Inactive Publication Date: 2017-08-29
GM GLOBAL TECH OPERATIONS LLC
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the vehicle is stationary or moving slowly, the engine coolant may not be able to release heat

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Minimum power consumption for cooling diagnostics based on cylinder deactivation
  • Minimum power consumption for cooling diagnostics based on cylinder deactivation
  • Minimum power consumption for cooling diagnostics based on cylinder deactivation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Engine coolant absorbs heat generated by the engine. The coolant pump circulates engine coolant through the engine system for heating and cooling. By way of example only, a coolant pump pumps hot coolant from an engine to a radiator for engine cooling. The coolant pump also pumps hot coolant from the engine to the heater core to heat the vehicle's passenger cabin.

[0042] A low coolant temperature fault can be diagnosed once the coolant exceeds the predetermined operating temperature. A low coolant temperature fault may be diagnosed when the coolant temperature is below a predetermined temperature. A low coolant temperature fault can be attributed to, for example, a thermostat stuck open allowing the coolant to cool unexpectedly or to cool more than expected.

[0043] In other embodiments, the control module determines the number of cylinders to deactivate during a cylinder deactivation event. During a cylinder deactivation event, at least one cylinder in the engin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A diagnostic system for an engine of a vehicle includes a temperature determination module, a comparison module, and a fault indication module. The temperature determination module receives an indication of whether one or more cylinders within the engine are deactivated and selects a first temperature threshold based on the indication. The comparison module selectively determines whether a temperature of engine coolant is less than the first temperature threshold. The fault indication module diagnoses a fault in response to the comparison module determining that the temperature of the engine coolant is less than the first temperature threshold.

Description

technical field [0001] The present invention relates to internal combustion engines, and more particularly to coolant temperature diagnostic systems and methods. Background technique [0002] The background description herein is for the purpose of generally presenting the context of the invention. The work of the presently named inventors, to the extent described in the Background Information section, and those aspects that were not prior art at the time of filing, are neither explicitly nor implicitly considered to be relative to the present invention existing technology. [0003] A vehicle's internal combustion engine combusts an air / fuel mixture within cylinders to produce torque. Combustion generates a very large amount of heat in the engine. The coolant pump circulates engine coolant through the coolant lines in the engine to cool the engine. The radiator is connected to the coolant pipes. The thermostat opens or opens to allow the coolant pump to circulate engine ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01P11/16
CPCF01P11/16F02D17/02F02D41/0087F02D41/22F02D43/00F02D2200/021Y02T10/40
Inventor S.P.列维乔基E.E.克劳泽J.W.西基宁
Owner GM GLOBAL TECH OPERATIONS LLC