KR950019091A - Fuel injection control device and control method - Google Patents

Abstract

In order to provide a preliminary injection control device for fuel and a method of controlling the same, the engine coolant temperature is controlled so that a predetermined injection amount can be completely burned by a separate injector so that the injection amount set according to the operating state of the vehicle can be completely atomized. Cooling water temperature detection means for detecting the output signal; Engine speed detection means for sensing an engine speed and outputting a corresponding signal; Load sensing means for outputting a corresponding signal according to the load state of the engine; Air-fuel ratio detection means for detecting an air-fuel ratio of the fuel and outputting a corresponding signal; It is connected to the coolant temperature sensing means, the engine speed sensing means, the load sensing means, and the air-fuel ratio detecting means, to set the auxiliary injection amount according to the coolant temperature of the engine, and to set the air-fuel ratio already set according to the engine speed and load Engine control means for calculating and outputting a corresponding control signal so that fuel can be injected by the set auxiliary injection amount, and then calculating an additional injection amount by comparing the air-fuel ratio at that time with the already calculated air-fuel ratio; It is connected to the engine control means, it is composed of an injector for injecting fuel by a set amount by operating in accordance with the applied control signal.

Description

Fuel injection control device and control method thereof.

Since this is an open matter, no full text was included.

1 is a block diagram of an early injection control device for fuel according to an embodiment of the present invention;

2 is an operation flowchart of a method for controlling early injection of fuel according to an embodiment of the present invention.

Claims (5)

Cooling water temperature detection means for sensing the engine coolant temperature and outputs a corresponding signal; Engine speed detection means for sensing an engine speed and outputting a corresponding signal; Load sensing means for outputting a corresponding signal according to the load state of the engine; Air-fuel ratio detection means for detecting an air-fuel ratio of the fuel and outputting a corresponding signal; It is connected to the coolant temperature sensing means, the engine speed sensing means, the load sensing means, and the air-fuel ratio detecting means, to set the auxiliary injection amount according to the coolant temperature of the engine, and to set the air-fuel ratio already set according to the engine speed and load Engine control means for calculating and outputting a corresponding control signal so that fuel can be injected by the set auxiliary injection amount, and then calculating the additional injection amount by comparing the air-fuel ratio at that time with the already-calculated air-fuel ratio; And an injector connected to the engine control means and configured to inject fuel by a set amount by operating in accordance with an applied control signal. According to claim 1, wherein the injector is an auxiliary injector 32 which operates to inject fuel by a set auxiliary injection amount, and one or more according to the type of each engine to inject additional fuel after the auxiliary injection Early injection control device of the fuel, characterized in that consisting of the main injector 31 is mounted. The early injection control device for fuel according to claim 1, wherein the load detection means comprises a map sensor or an air flow rate detection sensor. 2. An early injection control apparatus for fuel according to claim 1, further comprising heater means mounted under the auxiliary injector (32) to facilitate atomization of the fuel injected from the auxiliary injector (32). Setting the auxiliary injection amount injected through the auxiliary injector 32 of the injection apparatus by reading a signal applied from the cooling water temperature sensing means; Calculating a set air-fuel ratio corresponding to an operating state of the vehicle by reading signals applied from the engine speed branch means and the load sensing means; Outputting a control signal to the auxiliary injector 32 of the injector so as to inject fuel by the calculated auxiliary injection amount, and comparing and determining the air-fuel ratio and the set air-fuel ratio at that time; When the air-fuel ratio is smaller than the set air-fuel ratio, a corresponding control signal is output to the main injector 31 to inject an additional injection amount according to the difference between the air-fuel ratio and the set air-fuel ratio. Early fuel injection control method comprising the step of correcting the amount of fuel to be made. ※ Note: The disclosure is based on the initial application.