CN201009885Y - A car brake control device - Google Patents

Abstract

The utility model discloses an automobile brake control device, which comprises a power supply and a brake light connected with a brake light switch, and is characterized in that the brake light switch is connected with an ignition switch and a main relay respectively through an engine control system. connected; the brake light switch is used to input signals to the engine control system, and the engine management system performs corresponding control according to the input signals and output signals. The engine management system judges whether to perform the braking action according to the different signals. If the braking action is performed, the engine management system will immediately reduce the fuel injection quantity accordingly. At the same time, the engine management system constantly detects the status of the brake switch and displays the fault on the instrument cluster. Since the engine management system actively reduces fuel supply, it can better control exhaust emissions and be more environmentally friendly.

Description

A car brake control device

technical field

The utility model relates to an automobile control system, in particular to an automobile braking control device.

Background technique

With the rapid development of automobile electronic and electrical technology, people have higher and higher requirements for the safety and comfort of automobiles, and the integration degree of automobile electronic and electrical technology is continuously increasing. At present, the brake light control circuit in the automobile circuit only meets the functional requirements of lighting the brake light, and is mostly composed of a power supply system, a fuse, a connecting wire, a brake switch, a brake light, and a circuit connector. The control mode is as follows: step on the brake switch, connect the circuit, and turn on the brake light. However, this simple circuit implementation cannot meet the needs of modern automotive circuit design.

Utility model content

The technical problem to be solved by the utility model is to provide an automobile braking control device which can improve the braking effect, shorten the braking distance and increase the braking sensitivity.

In order to solve the above technical problems, the technical solution of the present utility model is an automobile brake control device, including a power supply and a brake light connected to the brake light switch, characterized in that: the brake light switch is The control system is respectively connected with the ignition switch and the main relay; the brake light switch is used to input signals to the engine control system, and the engine control system performs corresponding control according to the input signal and output signal.

An automobile brake control device, the engine control system is also connected with a combined meter.

An automobile brake control device, one end of the normally closed contact and one end of the normally open contact of the brake light switch are respectively connected to the input end of the engine control system, and the other end is connected to the power supply through the normally closed contact of the main relay. connect.

An automobile brake control device adopts the above-mentioned structure, including a power supply and a brake light connected with a brake switch, and the brake switch is respectively connected with an ignition switch and a main relay coil through an engine control system. The input signal of the engine control system adopts two inputs, one is a high-level signal, and the other is a suspension signal; the two signals are mutually verified to improve the accuracy and reliability of the signal. In the normal state, the normally open contact of the brake switch inputs a floating signal, and the normally closed contact inputs a high potential signal; in the braking state, the signal state is opposite. The engine control system judges whether to execute the braking action according to the difference of the signal. If the braking action is performed, the engine control system will immediately reduce the fuel injection quantity accordingly. At the same time, the engine control system constantly detects the state of the brake switch and displays the fault on the combination instrument. Since the engine control system actively reduces fuel supply, it can better control exhaust emissions and be more environmentally friendly.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail;

Fig. 1 is a schematic diagram of the circuit structure of an automobile brake control device of the present invention;

In Fig. 1, 1. Power supply; 2. Brake switch; 3. Engine control system; 4. Ignition switch; 5. Main relay 6. Combined instrument, 7. Brake light.

Detailed ways

As shown in FIG. 1 , an automobile braking control device includes a power supply 1 , and the power supply 1 is an automobile storage battery. The brake light 7 connected with the brake switch 2, the brake switch 2 is respectively connected with the ignition switch 4 and one end of the coil of the main relay 5 through the engine control system 3, and the other end of the coil is connected with the power supply. The brake switch 2 is used to input signals to the engine control system 3, and the engine control system 3 performs corresponding control according to the input signals and output signals. The engine control system 3 is also connected with the combination meter 6 . One end of the normally closed contact and one end of the normally open contact of the brake switch 2 are respectively connected to the input end of the engine control system 3 , and the other end is connected to the power supply 1 through the normally closed contact of the main relay 5 .

The input signal of the engine control system 3 adopts two inputs, one is a high-level signal, and the other is a suspension signal; the two signals are mutually checked to improve the accuracy and reliability of the signal. In the normal state, the normally open contact of the brake switch 2 inputs a floating signal, and the normally closed contact inputs a high potential signal; in the braking state, step on the brake device, the signal state is opposite. The engine control 3 system judges whether to brake according to the different signals. If the braking action is performed, the engine control system 3 will immediately reduce the fuel injection quantity correspondingly. At the same time, the engine control system 3 constantly detects the state of the brake switch 2 . In addition, in this device, the high-potential signal is taken from the output end of the normally closed point of the main relay 5, and the high-potential signal of the braking signal is taken from the main relay. Before the ignition switch 4 is in the ON position, the main relay 5 is powered off, and the ignition switch 4 After the ON gear, the engine control system 3 outputs a low potential signal, and the main relay 5 starts to work to ensure the correct input and monitoring of the braking signal; at the same time, after the engine stops working, the main relay 5 continues to work for a period of time to ensure that the engine Monitoring of relevant electrical components; when any of the two input signals monitored by the engine control system 3 is incorrect, the engine control system will light up the fault light of the combination instrument 6 to remind the driver to pay attention. The above-mentioned control process is realized by software installed in the control chip of the engine control system 3 .

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various improvements of the method concept and technical solutions of the utility model are adopted, or the utility model can be directly implemented without improvement. Those applied to other occasions are all within the protection scope of the present utility model.

Claims (3)

1. An automobile brake control device, comprising a power supply (1), a brake light (7) connected to a brake switch (2), characterized in that: the brake switch (2) is controlled by the engine control system (3) Connect with ignition switch (4) and main relay (5) respectively; The brake switch (2) is used to input signals to the engine control system (3), and the engine control system (3) performs corresponding control according to the input signals and output signals. 2. An automobile brake control device according to claim 1, characterized in that: said engine management system (3) is also connected to a combination meter (6). 3. A kind of automobile brake control device according to claim 1, characterized in that: one end of the normally closed contact and one end of the normally open contact of the brake switch (2) are respectively connected with the engine control system ( 3) The input ends are connected, and the other end is connected to the power supply (1) through the normally closed contact of the main relay (5).

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