Apparatus and method for controlling a vehicle engine

Abstract

The present invention relates to an apparatus and method for controlling a vehicle engine, which can control the engine by generating a target air amount based on a correction factor reflecting a vehicle state during excessive operation. To this end, the present invention provides a device for controlling a vehicle engine, comprising: an engine comprising an intake manifold receiving air and an exhaust manifold separating exhaust gases emissions; an exhaust gas recirculation valve that recirculates a portion of the exhaust gas to the intake manifold and controls the amount of recirculated exhaust gas; and a controller that controls the exhaust gas recirculation valve, wherein the controller sets A base target air amount depending on the operating point of the engine; a torque change amount generated based on an accelerator pedal change, and whether over-operation is determined based on the torque change amount; correction factor to produce the final target air volume.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit to Korean Patent Application No. 10-2016-0170390 filed in the Korean Intellectual Property Office on December 14, 2016, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to an apparatus for controlling a vehicle engine, and in particular, the present invention relates to an apparatus and method for controlling a vehicle engine which can be adjusted by generating a target air volume during excessive operation based on a correction factor reflecting the state of the vehicle. Take control of the engine. Background technique [0004] Generally, the exhaust gas of an engine contains a large amount of harmful components, such as carbon monoxide (CO), hydrocarbons (hydrocarbon, HC) and nitrogen oxides (nitrogen oxide, NOx). In particular, when the combustion temperature of the engine increases, the generation amount o...

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Problems solved by technology

[0010] However, in the related art, in the case where the boost pressure is insufficient to be formed during excessive operation to increase the torque, or in the case where the boost pressure cannot meet the target boost pressure during normal operation, in the subsequent determination by the fuel injection amount Exhaust gas recirculation (EGR) rate is reduced at target air volume, therefore NOx increases compared to target

[0011] Also, in the related art, contrary to this, during the excessive operation for torque reduction, the boost pressure is excessive and the EGR rate is excessive, and therefore, particulate matter (PM) increases and fuel efficiency deteriorates

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