JPH057962U - Engine starting system - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To prevent the electric motor from operating when the temperature of the catalytic converter that purifies the exhaust gas of the engine is low and there is no exhaust gas purification capability. A second semiconductor contact 8 is provided in series between a switch 2 and a battery 6 so that the controller 10 determines the operation of the electric motor according to the output of the temperature detection 9 of the exhaust gas purification device. did. [Effect] It is possible to reduce harmful substances in the exhaust gas when the engine is started.

Description

[Detailed description of the device] [Industrial applications]

  The present invention relates to a device for controlling energization of a starting motor.

[Prior art]

  As a device of this type, as disclosed in Japanese Patent Laid-Open No. 61-101672, a magnetic switch is used. There is a method to control the energization to the motor using a semiconductor contact, but the energization control to the motor is , Provided on the magnetic switch by operating the key switch of the car driver It was done by electromechanical contacts.

[Problems to be solved by the device]

  In the above conventional device, the magnetic switch is operated by operating the key switch of the automobile driver. Since the switch operates and the electric power of the battery is directly input to the electric motor, Even if the temperature of the catalytic converter that purifies exhaust gas is low and exhaust gas purification capacity is not available, There was a problem of operating the tarta and igniting the engine to discharge harmful gas.

[Means for Solving the Problems]

  In order to achieve the above objectives, the power supply to the starter is controlled to purify the engine exhaust gas. The temperature is set according to the temperature condition of the catalyst device.

[Action]

  Controlling the current supplied to the starter The temperature of the catalytic converter that purifies the exhaust gas of the engine Since it is done according to the conditions, the temperature of the catalytic converter that purifies the exhaust gas of the engine Prevents the starter from operating when the exhaust gas is not clean It is possible to

【Example】

  An embodiment of the present invention will be described with reference to FIGS.   FIG. 1 is an explanatory view showing an example of a system according to the present invention, in which 1 is an electric motor, Through the electromechanical contact 3 of the solenoid 2 which has a thin coil wound at the end multiple times Connected to the harness 4, the first semiconductor contact 5 and the battery 6 in series. And the other end is grounded.   The solenoid 2 has a second semiconductor contact 8 at one end via the starter switch 7. , Connected to the battery 6 and the other end is grounded. First and second semiconductor contacts Based on the detection data of the vehicle state sensor 9, the points 5 and 8 are controlled by the controller 10. Appropriate control signals are supplied.   Further, the driver of the automobile recognizes the judgment state of the control device 10 by the display device 11. You can do it.   The first and second semiconductor contacts 5 and 8 are PNP type semiconductors, and they are surge absorbing The expropriation diodes 13 and 12 are connected, and they are centrally arranged outside the battery 6. Form a power package 14. Between the above semiconductor and the battery 6 Insulation is sufficient to prevent the battery 6 from being adversely affected even if the semiconductor burns out. Has been done.   When the ignition switch 15 is turned on, the control device 10 causes the vehicle status sensor to The information such as the temperature of the catalyst device is started to be acquired by the server 9.   When the starter switch 7 is turned on, the control device 10 controls the information of the vehicle condition sensor 9. Based on the information, the starting condition is set according to the flowchart shown in FIG. Catalyst device temperature If the temperature has reached the operating temperature of the catalyst and it is judged that the engine is OK to start, first the second semiconductor The solenoid 2 is energized by controlling the body contact, and the shift lever 16 The pinion 17 smoothly into the ring gear 18 of the engine, Makes the electromechanical contact 3 conductive. (At this time, in the conventional device, a large current instantaneously flows and the motor 1 receives an excessive torque. Caused by damage to mechanical components such as the ring gear 18 and pinion 17 It could happen. )   At the same time, the display device 11 displays that the starting operation is in progress to let the driver recognize .   Next, the minimum required power is controlled by controlling the energization of the first semiconductor contact. By supplying from the battery 6 to the electric motor 1, the electric motor 1 and the pinion 17 Start the engine while suppressing the excessive torque generated in the composed starter to a low level. The engine is reliably started because the motor produces the power required to operate.   Furthermore, because the catalyst operates reliably, harmful substances in the exhaust gas when the engine starts Can be reduced.   In this embodiment, the semiconductor contact or the control circuit 10 is integrated with the battery 6. This allows the semiconductor contacts, control circuit, and battery to be exposed to high temperatures and Even in a room, you can place it in a small space in a location with a relatively low temperature environment. It is possible to improve the reliability.   In addition, even if the semiconductor contact is damaged in FIG. Since the mechanical contact is disconnected by the starter switch 7, a large current flows to the motor. It is possible to prevent the occurrence of defects such as burnout due to the fact that it is left alone.   In addition, the present invention has a semiconductor contact as the battery voltage becomes higher than 24V. Electric loss of voltage drop can be reduced, and the cost and size of semiconductor contacts can be determined. There is also an effect that it becomes more effective because the maximum current becomes lower.   Furthermore, with electromechanical contacts, the higher the voltage, the more difficult it is to disconnect the contacts. However, according to this embodiment, first, the voltage between the electromechanical contacts is lowered at the first semiconductor contact. Since it is sufficient to disconnect the electromechanical contact after that, the reliability of the contact portion is significantly improved. Furthermore, a smaller electromechanical contact than that for 12V can be adopted, resulting in lighter weight and manufacturing. The manufacturing cost can be reduced.   In addition, the temperature of the catalyst device has not reached the operating temperature of the catalyst and it is determined that it cannot be started. If it does, the display device 11 displays the fact that the engine cannot be started and the reason for it, and prompts the driver to confirm. Make you aware.   It is possible to make the driver recognize the reason why the starting system does not operate. As a result, the driver can take appropriate measures, and the engine can be started in a shorter time. The effect is that it can be started.

[Effect of device]

  The temperature of the catalytic converter that purifies the exhaust gas of the engine is controlled by controlling the current supplied to the electric motor. The temperature of the catalytic converter that purifies the exhaust gas of the engine Since the electric motor operates only when is sufficiently high and is capable of purifying exhaust gas, It is possible to reduce harmful substances in exhaust gas when the engine is started.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a control method of the present invention.

[Explanation of symbols]

1 ... Electric motor, 4 ... Harness, 5 ... First semiconductor contact, 6
... Battery, 8 ... Second semiconductor contact, 9 ... Vehicle state sensor, 10 ... Control device, 11 ... Display device.

Claims (2)

[Scope of utility model registration request] 1. A means for detecting the state of an automobile in a starting system comprising a motor for generating power by a switch operation when starting an engine and a harness for electrically connecting and supplying a battery as a power source of the motor. An engine starting system characterized in that the operation of the starter is controlled according to the output signal of the control means, and means for determining the operation of the starter based on the signal of the state detection means. 2. The engine starting system according to claim 1, wherein the temperature of a catalyst device for purifying engine exhaust gas is used as a means for detecting the state of the vehicle.