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Vehicle control device

A control device and vehicle technology, which is applied in vehicle components, transmission control, transportation and packaging, and can solve problems such as vehicle failures

Inactive Publication Date: 2018-02-16
HITACHI AUTOMOTIVE SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also an actuator that acts unconsciously as the vehicle when the indicated value becomes an error value, causing a breakdown of the vehicle

Method used

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Experimental program
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Embodiment 1

[0035] use Figure 1 to Figure 3 A first embodiment of the present invention will be described.

[0036] The purpose of this embodiment is to implement the diagnosis of the main control unit and monitoring unit of the transmission control device, and the diagnosis of the relay that supplies power to the transmission control device. When the main control unit and monitoring unit of the transmission control device fail The control is performed in a safe direction, and the user can be notified of the connection abnormality of the relay and can be repaired by the supplier before the battery is exhausted due to power consumption.

[0037] figure 1 This is a block diagram showing an overall transmission control device for controlling an automatic transmission of a vehicle. The transmission control device 10 includes a power supply IC 20 , a main control unit 30 , and a monitoring unit 40 that monitors the main control unit 30 based on a signal from the main control unit 30 . A li...

Embodiment 2

[0049] use Figure 4 and Figure 5 A second embodiment of the present invention will be described. In this embodiment, ACCSW4 is provided in addition to the configuration of the first embodiment.

[0050] Figure 4 It is a block diagram showing the whole transmission control device with ACCSW4 added. The power supply IC 20 is connected to a path for supplying power from the power relay 2 without passing through IGNSW3 and ACCSW4 and a path for supplying power from the battery 1 through IGNSW3 and ACCSW4 , respectively.

[0051] In this embodiment, the OR input is made to IGNSW3 and ACCSW4, so when the operator shifts the key position to the ignition position or the accessory position, power is supplied to the power supply IC 20 to activate the main control unit 30 and the monitoring unit 40 . When the main control unit 30 is activated, an ON instruction is given to the relay controller 203 to turn ON the power supply relay 2 between the battery 1 and the transmission contr...

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PUM

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Abstract

The present invention diagnoses both a relay diagnostic unit which diagnoses a relay that switches on and off the supply of power to a transmission control device, and a monitoring diagnostic unit which diagnoses a monitoring unit that monitors a main control unit on the basis of a signal from the main control unit. This transmission control device is equipped with a main control unit and a monitoring unit that monitors the main control unit on the basis of a signal from the main control unit, and is equipped with: a relay diagnostic unit which diagnoses a relay that switches on and off the supply of power to the transmission control device; and a monitoring diagnostic unit which diagnoses the monitoring unit. Both the diagnosis to detect failures in the relay and the diagnosis of the monitoring function of the main control unit can be conducted by conducting a diagnosis both at the point in time when a key position shifts to an off position and at the point in time when the key position shifts to an accessory position.

Description

technical field [0001] The present invention relates to a control device for a vehicle, and particularly relates to diagnosis of a relay for power supply to the control device for a vehicle. Background technique [0002] For example, as an example of a vehicle control device, a transmission control device is supplied with power from a battery, and a power supply relay is generally inserted between the battery and the transmission control device as power supply / shutoff means. If the power relay is turned on, a large current will flow from the battery, heat will be generated even at the contacts of the power relay, and the contacts will be fixed (connected) and cannot be moved. In order to detect this, there is a failure detection device provided with a power relay. For example, Patent Document 1 discloses a technique for detecting an abnormality in the closed connection of the power relay when the ignition switch is turned off. [0003] On the other hand, in the transmission...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02F16H61/02F16H61/12
CPCB60R16/02F16H61/12F16H2061/1268F16H2061/1208F16H63/40F16H61/02
Inventor 椎谷崇增田裕介涩泽淳一野村卓司
Owner HITACHI AUTOMOTIVE SYST LTD