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Apparatus and method for controlling operation of an exhaust gas recirculation valve using a spark advance management apparatus

A technology of ignition advance and control method, applied in the direction of exhaust gas recirculation, spark ignition controller, electrical control, etc., can solve the problems of acceleration defects, incomplete satisfaction, engine power loss, etc.

Active Publication Date: 2021-09-14
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this valve is not entirely satisfactory in view of its operation in difficult environments where oily hydrocarbons may cause it to corrode and clog
Specifically, control valves stuck in the open position causing loss of engine power, acceleration deficiencies and occasional smoke and misfiring

Method used

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  • Apparatus and method for controlling operation of an exhaust gas recirculation valve using a spark advance management apparatus
  • Apparatus and method for controlling operation of an exhaust gas recirculation valve using a spark advance management apparatus
  • Apparatus and method for controlling operation of an exhaust gas recirculation valve using a spark advance management apparatus

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Embodiment Construction

[0053] The first reference figure 1 The operation of FIG presented for an internal combustion engine control apparatus in FIG. 2 1.

[0054] The internal combustion engine 2 comprises a cylinder defining a combustion chamber 3b and 3c sliding piston 3a. The piston 3a is connected to the crank 4, which crank 5 connected to the crankshaft. The engine 2 further comprises an inlet duct 6 and the exhaust duct 7, the conduit communicating with the combustion chamber 3c. 8 engine equipped with two valves, the valves can be switched off and the aperture 7 of the duct 6. The engine further comprises a spark plug 9.

[0055] 9 is a spark ignition by the ignition timing control apparatus 10 managed by means of the ignition advance to the application management device spark advance AV AP . The management device 10 is equipped with a knock sensor 11, the knock sensor detects knocking phenomenon in an engine 2. Management function device 10 is to calculate the optimum spark advance AV OPT That ...

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Abstract

Such a control device (1) serves to control the operating state of an exhaust gas recirculation system control valve of an internal combustion engine (2). The engine (2) comprises at least one spark plug (9), an ignition advance management device (10) capable of determining an optimum ignition advance and applying it to the spark plug (9), and is equipped with an exhaust gas recirculation control valve An exhaust gas recirculation device (12) of (13). The control device (1) comprises: - a first actuating device (17) capable of forcibly opening and closing the control valve (13), - a map (18) in which the Varying a plurality of theoretical ignition advance values ​​with engine load, - a first calculation device (19), which can calculate a diagnostic index according to the theoretical ignition advance and optimal ignition advance determined by the map (18) , and -comparison means (21) capable of comparing the diagnostic index with a control valve failure threshold.

Description

Technical field [0001] The present invention relates to controlling exhaust gas recirculation in a controlled ignition engine operating state devices, and more specifically to monitor the exhaust gas recirculation control valve is opened and an apparatus and a method of closing failure . Background technique [0002] Applied to the controlled ignition engine exhaust gas recirculation (EGR) technology can increase resistance to engine knock. Knock is released and raised to a high temperature and high pressure by the energy caused by the expansion of the flame front through the movement of the piston part and a mixture of unburnt instantaneous large spontaneous combustion. Where the resulting increase in local pressure, followed by a gaseous mass of vibration. The latter cause excessive mechanical and thermal stresses, may have serious damaging incidents: a cylinder head gasket leaks, partial melt bonding or the piston, cylinder head and valve is deteriorated. If the risk of a larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D43/00F02M26/49F02P5/15F02P5/152
CPCF02P5/152F02P5/1516F02D41/0077F02D41/221F02D37/02F02M26/49F02D35/027Y02T10/40
Inventor V-P·阿翁C·哈特
Owner RENAULT SA