KR19980066183U - Engine preheat status display system - Google Patents

Abstract

The present invention relates to an engine preheating state display system of a vehicle, and detects an RPM of an engine and outputs a signal according thereto, or a cooling water temperature sensor for measuring a temperature of an engine coolant and outputting a corresponding signal, and an input operation. A display device which serves to indicate a preheat state suitability to the driver by a control signal, and an engine ECU which determines whether the preheat state suits the display device based on a signal input from the RPM sensor or the coolant temperature sensor and applies an operation control signal to the display device By notifying the driver of the preheat state by the preheat state display system comprising a, there is an effect of preventing energy waste due to excessive preheating and loss of the engine due to lack of preheating.

Description

Engine preheat status display system.

The present invention relates to an engine preheating status display system, and in particular, by displaying the suitability of the engine preheating state on the basis of the coolant temperature or the speed of the engine detected from the coolant temperature sensor and the speed sensor, the preheating overload The present invention relates to an engine preheating status display system for preventing damage to the engine, deterioration, and waste of energy.

In general, an engine of a vehicle converts a reciprocating motion of a piston generated by compression, ignition, and combustion of a mixer sucked into a cylinder into a rotational motion, and transmits the rotational motion to a driving wheel to generate propulsion of the vehicle. will be.

However, when the outside temperature is cold or a predetermined time has elapsed after the vehicle is parked, the automobile engine is cooled. As a result, the degree of vaporization of gasoline is lowered, the viscosity of the engine oil is increased, and even lubrication is not evenly applied to the entire device constituting the vehicle.

As a result, when the engine is rotated at a high speed or started at full speed after starting the engine, a problem occurs that causes damage to the engine.

In order to prevent damage to the engine as described above, when the vehicle is generally started after a predetermined time has elapsed in a cold or parked state, the driver has preheated the engine for a predetermined time after starting the engine.

However, when the driver performs the preheating process of the engine as described above, the driver cannot determine the correctness of the preheating state by intuition and thus cannot make an accurate judgment. When the problem of waste occurs and the above-mentioned preheating time is insufficient, there is a problem that brings about damage to the engine.

The present invention for solving the problems as described above by displaying the appropriate condition of the preheating state of the engine to the driver on the basis of the coolant temperature or the number of revolutions of the engine detected from the coolant temperature sensor and the rotational speed sensor, It is an object of the present invention to provide an engine preheating status display system that can prevent engine damage, deterioration, and energy waste.

1A is a block diagram illustrating an engine preheat state display system according to an embodiment of the present invention.

1B is a flow chart showing the operation according to FIG. 1A.

Figure 2a is a block diagram showing an engine preheat state display system according to another embodiment of the present invention.

2b is a flow chart showing the operation according to FIG. 2a;

Explanation of symbols on the main parts of the drawings

10: RPM sensor 20: display device

30: engine ECU80: coolant temperature sensor

Features of the present invention for achieving the above object is an RPM sensor for detecting the number of revolutions (RPM) of the engine and outputs a signal according thereto, and a display that serves to indicate the preheat state suitability to the driver by the input operation control signal Apparatus and an engine ECU for applying the operation control signal to the display device by determining whether the preheat state is appropriate based on the signal input from the RPM sensor to provide a preheat state display system.

Another feature of the present invention for achieving the above object is a coolant temperature sensor which is mounted on the water jacket of the engine to measure the temperature of the engine coolant and outputs a signal according thereto, and the preheating condition suitable to the driver by the input operation control signal It provides a pre-heating status display system comprising a display device that serves to indicate and an engine ECU for determining whether the preheating state is appropriate based on the signal input from the coolant temperature sensor to apply an operation control signal to the display device. It's there.

An additional feature of the present invention is that the display device has a preheat state mismatch display means indicating that the preheat state of the engine is inadequate, and a preheat state conformity display means indicating that the preheat state of the engine is suitable. It is to provide a display system.

Looking at the outline of the operation according to the characteristics of the present invention, when the starting switch is turned on, the engine ECU keeps the vehicle in the idle state, based on the signal output from the RPM sensor, below the threshold value of the pre-heating suitable state Determining whether the cooling water temperature is equal to or higher than a threshold value at which the cooling water temperature becomes a preheating suitable state based on a signal output from the cooling water temperature sensor, and applying a signal according to the determination result to a display device to display By operating the overheat state non-compliance display means, the driver is informed of the optimum normal running time.

Hereinafter, a preferred embodiment according to the present invention with reference to the accompanying drawings as follows.

1A is a block diagram illustrating an engine preheat state display system according to an embodiment of the present invention.

The engine preheating state display system detects an RPM of the engine and outputs a signal according thereto, and a display device 20 which serves to indicate whether the preheating state is appropriate to the driver by an input operation control signal, and the An engine electrical control unit (hereinafter referred to as an engine ECU) 30 which applies an operation control signal to the display apparatus 20 based on a signal input from the RPM sensor 10.

The display device 20 is mounted on an instrument panel (not shown) of the vehicle for easy recognition by the driver, and includes a red light emitting diode 22 (hereinafter referred to as R-LED) representing red and a green light emitting diode representing green. 24 or less G-LED). In more detail, the R-LED 22 represents a preheating misfit state of the engine, and the G-LED 24 represents a preheating conformance state of the engine.

The engine ECU 30 includes an ignition device 60 for igniting a starting motor 50 for transmitting rotational force to the crankshaft of the engine and a mixer in the combustion chamber when the start switch 40 of the vehicle is turned on. While maintaining the idle state by driving the fuel supply device 70 for supplying fuel into the combustion chamber, the RPM of the engine output from the RPM sensor 10 by operating the RPM sensor 10 is the engine It is determined whether the temperature falls below a threshold value for becoming a preheating state, and a signal corresponding to the engine preheating state appropriateness is output to the display apparatus 20.

The operation according to the engine preheat state display system configured as described above will be described with reference to a flowchart shown in FIG. 1B.

When the start switch 40 of the vehicle is turned on (S111), the engine ECU 30 drives the starter motor 50, the ignition device 60, and the fuel supply device 70 to operate the engine in an idle state ( S112) and, in addition, operates the RPM sensor 10 (S113).

The RPM of the engine measured from the RPM sensor 10 is applied to the engine ECU 30, and the engine ECU 30 determines whether the RPM is equal to or less than a threshold value X to become an engine preheating suitable state (S114). .

When the RPM of the engine becomes less than or equal to the threshold value X in the determining step S114, the engine ECU 30 operates the G-LED 24 constituting the display device 20 (S115), thereby preheating the engine to the driver. Indicates that it is suitable, and when the driver recognizes the operation (S115) of the G-LED 24 described above, normal driving is performed (S116). This prevents damage to the engine and waste of energy.

When the RPM of the engine does not fall below the threshold value X in the determination step S114, the engine ECU 30 operates (S117) the R-LED 22 indicating a preheat state failure, and the driver indicates the R Recognizing the operation S117 of the LED 22, by executing the idle state (S112) until the G-LED 24 is operated without the normal driving (S116), to prevent damage to the engine and waste of energy do.

Figure 2a is a block diagram showing another embodiment of the engine preheat state display system according to the present invention.

Coolant temperature sensor 80 installed in the water jacket of the engine to measure the coolant temperature and output a signal according thereto, and R-LED 22 and G indicating the engine preheating status to the driver by the input operation control signal, G A display device 20 including an LED 24 and an engine ECU 30 for applying an operation control signal to the display device 20 based on a signal input from the coolant temperature sensor 80. .

The engine ECU 30 drives the starting motor 50 for transmitting rotational force to the crankshaft of the engine, the ignition device 60 for igniting the mixer in the combustion chamber, and the fuel supply device 70 for supplying fuel in the combustion chamber. By maintaining the idle state and determining whether the preheated state of the engine is above a threshold value suitable for the engine, based on the signal input through the coolant temperature sensor 80, the display device 20 displays the signal accordingly. Is applied.

The operation according to the engine preheat state display system configured as described above will be described with reference to a flowchart shown in FIG. 2B.

When the start switch 40 of the vehicle is turned on (S211), the engine ECU 30 drives the starter motor 50, the ignition device 60, and the fuel supply device 70 to operate the engine in an idle state ( In addition, the cooling water temperature sensor 80 is operated (S213).

A signal according to the coolant temperature of the engine measured by the coolant temperature sensor 80 is applied to the engine ECU 30, and the signal output from the coolant temperature sensor 80 is converted to an engine preheating state by the engine ECU 30. It is determined whether or not the threshold value Y is equal to or greater than S214.

When the coolant temperature is greater than or equal to the threshold value Y in the determination step S214, the engine ECU 30 operates the G-LED 24 constituting the display device 20 (S215) to provide a driver with a preheating state of the engine. Indicative of fit, and when the driver recognizes the operation (S215) of the G-LED 24 described above, the normal driving (S216) is performed.

When the coolant temperature does not exceed the threshold value Y in the determination step S214, the engine ECU 30 operates the R-LED 22 indicating the preheat state incompatibility, and the driver indicates the R-LED 22 described above. If it recognizes the operation of the) and does not run (S216) normal to run the idle state until the G-LED (24) is operated (S212).

Therefore, according to the present invention, the driver can easily recognize the warm-up state of the engine through the R-LED and the G-LED of the display device mounted inside the vehicle.

As described above, the subject innovation is that the driver can easily recognize the preheating state appropriateness of the engine through the display device mounted inside the vehicle. In addition to preventing damage and deterioration, there is an effect to prevent energy waste due to excessive engine preheating.

Claims (3)

In a preheating system of a vehicle in which an engine is operated in an idle state by driving a starter motor, an ignition device, a fuel supply device, and the like when the vehicle start switch is turned on: An RPM sensor which detects the RPM of the engine and outputs a signal according thereto; A display device which serves to indicate a preheat state suitability to the driver by an input operation control signal; An engine preheating state, including an engine ECU which determines whether the preheating state is appropriate based on the signal input from the RPM sensor and displays an appropriateness of the preheating state of the engine to the driver, including an engine ECU which applies an operation control signal to the display device Display system. In a preheating system of a vehicle in which an engine is operated in an idle state by driving a starter motor, an ignition device, a fuel supply device, and the like when the vehicle start switch is turned on: A coolant temperature sensor mounted on the water jacket of the engine and measuring a temperature of the engine coolant and outputting a signal accordingly; A display device which serves to indicate a preheat state suitability to the driver by an input operation control signal; An engine ECU for determining whether the preheat state is appropriate based on a signal input from the coolant temperature sensor and displaying the suitability of the preheat state of the engine to the driver including an engine ECU which applies an operation control signal to the display device accordingly; Preheat status display system. 3. The display of the engine preheating state according to claim 2, wherein the display device includes preheat state mismatch display means indicating that the preheat state of the engine is inadequate, and preheat state conformity display means indicating that the preheat state of the engine is suitable. system.