Motor control apparatus

Abstract

The invention provides a motor control apparatus, which can not only reduce the data capacity required by high correction of fuel injection without pressure sensors such as an air pressure sensor or an air inlet sensor but also achieves good start performance, and unnecessary fuel injection is inhibated. Air density correction MAS and primary value TIS of the fuel injection amount at the start time are considered by a primary injection amount calculation part (108a), as the injection fuel amount much less than the base fuel injection amount corresponding to the motor temperature, a fuel addition control portion (108b) increases the air density correction MAS, the fuel injection amount TIS at the start time of the motor (1) is increased, after explosion injection amount calculation portion (108c) is completely calculates the fuel injection amount (TI) after complete explosion of the motor (1) by increase the air density index MAS by the fuel addition control portion 108b after the motor (1) is completely exploded.

Description

technical field [0001] The present invention relates to an engine control device, and more particularly to an engine control device for controlling the fuel injection amount of an engine of a mobile body such as a vehicle. Background technique [0002] In recent years, in mobile bodies such as vehicles, in order to avoid complicating the mechanical structure and to control the amount of fuel supplied to the engine with a high degree of freedom corresponding to the operation of the accelerator operating member, engines equipped with fuel injection control mechanisms have been adopted. The fuel injection control means injects fuel from the injector while electronically controlling the fuel supply amount to the engine. [0003] In addition, in such an engine, when a mobile body such as a vehicle is located on a high ground, the amount of fuel in the air-fuel mixture is relatively excessive due to a decrease in atmospheric pressure and a decrease in the amount of intake air, and...

AI Technical Summary

Problems solved by technology

[0009] However, according to the research of the present inventors, in the structure disclosed in Patent Document 1, it is necessary to install the mass air sensor itself for detecting the intake air amount of the engine, so the structure is more complicated, and in order to compare engine parameters, it is necessary to prepare in advance. Various mapping data, the amount of data that should be prepared for the entire control device increases significantly, the structure becomes complicated, and there is a strong tendency that it is difficult to achieve cost reduction

[0010] In addition, according to the structure disclosed in Patent Document 2, it is necessary to provide the pressure sensor itself which detects the intake manifold pressure of the engine with an absolute value, so the structure is complicated and it tends to be difficult to achieve cost reduction strongly.

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