RU2422787C1 - Method to control vehicle engine power and method of vehicle on-board computer operation - Google Patents

Abstract

FIELD: transport. ^ SUBSTANCE: method to control power includes saving in data processing unit memory the reference engine power value, the value of reference cyclic combustion chamber filling with air, requesting the control unit for current values of cyclic filling with air and fuel injection time correction factor. Current value of power is calculated as product of current value of cyclic filling with air by fuel injection time correction factor. Current value of power in comparison with reference value is displayed. Method of on-board computer operation includes asking from engine control unit via vehicle data bus for values of engine operation parameters, their processing, saving processing result, its comparison with reference value and operations of power control method. ^ EFFECT: higher safety. ^ 4 cl, 1 dwg

Description

The invention relates to the field of vehicle instrumentation and can be used in the construction of a vehicle equipped with an internal combustion engine (hereinafter - ICE).

It is known that the power given by the engine depends on the amount of air entering the engine (see, for example, description to application 94041740 A1, F02D 33/00, F02D 1/02, publ. 10.08.1996). Information about the possibility of increasing the air supply to the engine and, accordingly, about the possibility of increasing the power supplied by the engine, may be useful to the driver for making decisions related to driving a vehicle.

A well-known vehicle information system, see, for example, patent RU 67527 U1, B60R 16/02, publ. 10/27/2007, bull. No. 30, which includes an engine control unit, an information processing unit, configured to interrogate an engine control unit through an information bus, and an information display unit with a display. The information processing unit is based on a microprocessor and is equipped with a memory device.

It is known that a typical design of an on-board computer of a car (see, for example, patent RU 34758U1, G01S 13/00, published December 10, 2003) includes an information processing unit configured to be connected to the engine control unit via the vehicle information bus , information display unit and display.

The engine control unit measures the parameters of the internal combustion engine and controls the fuel supply to the internal combustion engine cylinders by opening and closing the fuel injectors. The engine control unit changes the duration of the nozzle opening depending on the cyclic fuel supply. The cycle fuel supply is determined based on the value of the cyclic filling of the ICE cylinder with air (hereinafter referred to as the cyclic filling value). To measure the cyclic filling use the signal of the mass air flow sensor (hereinafter - DMRV).

A known method of controlling the power of internal combustion engines, known from patent RU 2171973 C2, G01L 3/24, publ. 08/10/2001, the Method consists in the fact that register parameters characterizing the engine power, determine the maximum value of power and show its value on the indicator. The method is characterized by increased implementation complexity due to the need to use:

- pressure sensor in the engine cylinders;

- power measurement unit;

- block finding the extremum.

For the prototype of the proposed method for controlling the engine power of a vehicle, a method for diagnosing an engine is taken, see patent for invention RU 2358145 C1, F02M 65/00, publ. 06/10/2009, in which the ICE control unit measures the current values of the ICE operation parameters, requests the information processing unit to measure the data, processes it, stores the processing result, compares it with the reference value and displays the processing result reduced to the reference on the display of the information display unit value.

For the prototype of the proposed method of operation of an on-board computer of a car, the method of operation of an on-board computer, known from the description of the patent for invention RU 2358145 C1, F02M 65/00, publ. 06/10/2009, the essence of the method is as follows. Reference data on engine operation are recorded in the on-board computer memory, during the operation of the internal combustion engine, they request from the internal combustion engine control unit the current internal combustion engine operation parameters, the current parameters are compared with the reference parameters in the computer and the deviations of the parameters from the reference parameters are shown on the computer display.

A disadvantage of the known methods, including methods adopted as a prototype, is the lack of the possibility of operational control of the power supplied to the internal combustion engine.

The task of the claimed invention is to create the most easily implemented way to control the power given to the internal combustion engine.

The problem is solved in a method for controlling the power supplied by an internal combustion engine of a vehicle equipped with an engine control unit, an information processing unit, an information display unit and a display in which the engine control unit measures the current values of engine operation parameters, periodically requesting the information processing unit for measured values of parameters, process them, remember the result of the processing, compare it with the reference value and output it through the display unit and formation to display the processing result, in comparison with a reference value.

The problem is solved in that in the memory of the information processing unit, the value of the reference value for the given engine of the cycle filling of the combustion chamber with air is stored as a reference value of the engine, the current values of the cycle filling of the air and the coefficient of correction of the fuel injection duration are requested from the engine control unit, the current the value of the power given by the engine as a product of the current value of the cyclic air filling and the correction factor for the duration and fuel injection and show on the display the current value of the power supplied by the engine, in comparison with the reference value.

The problem is also solved in the method of operation of the vehicle’s on-board computer, in which the values of engine operation parameters are periodically requested from the internal combustion engine control unit on the vehicle’s information bus, they are processed, the processing result is stored, compared with the reference value and the processing result is displayed on the on-board computer, reduced to a reference value.

The problem is solved in that in the on-board computer memory, the value of the reference value for the given engine for cyclic filling of the combustion chamber with air is stored as a reference value of the engine’s power, the current values of the cycle filling of air and the fuel injection duration correction coefficient are requested from the engine control unit, the current value is calculated power given by the engine as a product of the current value of the cyclic air filling and the correction factor for the injection duration fuel, and show on the display the current value of power given by the engine, in comparison with the reference value. In this case, the display can simultaneously show the current and reference power values in the form of a dynamic scale, or they can show the current value of the power supplied by the engine in digital form, as a percentage of the reference power value.

The invention is illustrated in the drawing, which shows a block diagram of a vehicle information system.

The inventive methods can be successfully implemented, for example, in the vehicle’s information system, which includes ICE parameters sensors 1, ICE control unit 2 and an on-board computer 3 connected to it via the information bus, which includes information processing unit 4, display unit 5 information and display 6.

To implement the method of controlling the power given by the engine, the following actions are performed.

In the memory of the information processing unit 4 of the on-board computer 3, the value of the reference value for the given engine of the cyclic filling of the combustion chamber with air is recorded as a reference value of the power given by the engine.

The engine control unit 2 receives signals from the sensors 1, which may be the engine crankshaft position sensor, mass air flow sensor, oxygen sensor and speed sensor. Based on the data obtained, in the control unit 2, the cyclic air filling and the correction coefficient of the injection duration are calculated. The information processing unit 4 of the on-board computer 3 from the engine control unit 2 periodically requests the value of the cycle filling and the injection duration correction coefficient via the data bus, calculates the data, calculates the current value of the power supplied by the engine, as the product of the current value of the cycle air filling and the injection duration correction coefficient fuel, compare the received current value of the power supplied by the engine with the reference and show on the display 6 the current value s power imparted by the internal combustion engine in comparison with the reference value.

To implement the method of operation of the on-board computer, the following actions are performed.

In the memory of the on-board computer 3 is recorded as a reference value of the power given by the engine, the value of the reference for this engine cyclic filling of the combustion chamber with air.

During operation, the internal combustion engine is periodically requested from the internal combustion engine control unit 2 via the information bus for the values of the cyclic air filling and the coefficient of the injection duration correction, the calculated data are obtained, the current value of the power supplied by the engine is calculated as the product of the current value of the cyclic air filling and the coefficient of the fuel injection duration correction, compare the received current value of the power given by the engine with the reference and show on the display 6 the current value of the power given ICE, in comparison with the reference value.

The proposed methods are aimed at forming a new need for a vehicle driver to control the power supplied to the internal combustion engine, and increasing the level of awareness of the vehicle driver and driving safety.

Claims (4)

1. A method of controlling the power supplied by an internal combustion engine of a vehicle equipped with an engine control unit, an information processing unit, an information display unit and a display in which the engine control unit measures the current values of engine operation parameters, periodically requests the information processing unit for measured parameters, processes they, remember the processing result, compare it with the reference value and display the processing result, in comparison with the reference a characteristic value, characterized in that in the memory of the information processing unit, the value of the reference value for the given engine for cyclic filling of the combustion chamber with air is stored as a reference value of the power supplied by the engine, the current values of the cyclic filling of air and the coefficient of correction of the fuel injection duration are requested from the engine control unit, calculate the current value of the power given by the engine as the product of the current value of the cyclic air filling and the correction factor and fuel injection duration, and show on the display the current value of power given by the motor in comparison with the reference value. 2. The method of operation of the vehicle’s on-board computer, in which the values of the engine operation parameters are periodically requested from the internal combustion engine control unit on the vehicle’s information bus, they are processed, the processing result is stored, compared with the reference value, and the processing result reduced to a reference value, characterized in that in the on-board computer memory is stored as a reference value of the power given by the engine, the value of the reference for a given engine of cyclic filling of the combustion chamber with air, the current values of the cyclic filling of the air and the coefficient of correction of the fuel injection duration are requested from the engine control unit, the current value of the power given by the engine is calculated as the product of the current value of the cyclic filling of the air and the coefficient of correction of the duration of the fuel injection, and show on the display the current value of the power delivered by the engine, in comparison with the reference value. 3. The method according to claim 2, characterized in that the display shows the current and reference power values in the form of a dynamic scale. 4. The method according to claim 3, characterized in that the display shows the current value of the power supplied by the engine, as a percentage of the reference power value.