Injector driver and operating method thereof

Patent metadata

Field	Value
Publication number	US-9657668-B2
Application number	US-201414168508-A
Country	US
Kind code	B2
Filing date	Jan 30, 2014
Priority date	Dec 4, 2013
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

An injector driver and an operating method thereof are provided in which a driving semiconductor directly controls a brake signal when a brake error occurs in driving an injector, to thus secure a safety function. The injector driver a driving semiconductor configured to transmit an interrupt signal for acknowledging whether a brake signal has been received to a micro-control unit (MCU) when a brake signal is applied. In addition, the driving semiconductor receives a brake signal recognition acknowledgement response signal from the MCU and detects whether the MCU has an error based on the brake signal recognition acknowledgement response signal reception result. Further, the driving semiconductor operates an injector driving signal when the response signal is not received from the MCU for a predetermined period of time.

First claim

What is claimed is:

1. An injector driver comprising:
an interrupt signal generating unit configured to transmit an interrupt signal for acknowledging whether a brake signal has been received to a micro-control unit (MCU) when a brake signal is applied in the event of a braking operation of a vehicle;
a response acknowledging unit configured to receive a brake signal recognition acknowledgement response signal from the MCU; and
a controller configured to detect whether the MCU has an error based on a brake signal recognition acknowledgement response signal reception result of the response acknowledging unit, and control an injector driving signal for an injector by itself when the brake signal recognition acknowledgment response signal is not received from the MCU for a predetermined period of time.

2. The injector driver according to claim 1 , further comprising a brake signal input unit configured to receive the brake signal.

3. The injector driver according to claim 1 , wherein when the brake signal recognition acknowledgement response signal is received from the MCU within the predetermined period of time, the controller of a driving semiconductor is configured to operate the injector based on a command signal applied from the MCU.

4. The injector driver according to claim 1 , wherein the controller of a driving semiconductor is configured to operate the injector based on a command signal from the MCU for an abnormal state determination time during which whether the MCU has an error is determined.

5. An injector driver comprising:
a micro-control unit (MCU) configured to transmit a response signal regarding whether a brake signal has been received, when an interrupt signal is received; and
a driving semiconductor configured to transmit the interrupt signal when the brake signal is applied, detect whether the MCU has an error upon receiving the response signal, and operate an injector driving signal for an injector by itself when the response signal is not received from the MCU for a predetermined period of time.

6. The injector driver according to claim 5 , wherein the driving semiconductor includes:
an interrupt signal generating unit configured to transmit the interrupt signal for acknowledging whether the brake signal has been received to the micro-control unit (MCU) when the brake signal is applied in the event of a braking operation of a vehicle;
a response acknowledging unit configured to receive the response signal acknowledging whether the brake signal has been recognized from the MCU; and
a controller configured to control the injector driving signal by itself when the response signal is not received from the MCU for the predetermined period of time.

7. The injector driver according to claim 6 , further comprising a brake signal input unit configured to receive the brake signal.

8. The injector driver according to claim 5 , wherein when the response signal is received from the MCU within the predetermined period of time, the driving semiconductor is configured to operate the injector based on a command signal applied from the MCU.

9. The injector driver according to claim 5 , wherein the driving semiconductor is configured to operate the injector based on a command signal from the MCU for an abnormal state determination time during which whether the MCU has an error is determined.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Hyundai Autron Company Ltd

Inventors

• Park Choong Seob
• Lee Ji Haeng
• Cho Kang Hee
• Jang Doo Jin

Classifications

• F02D41/12 Primary

  for deceleration {(F02D41/0005, F02D41/107 take precedence)} · CPC title

• F02M2200/00

  Details of fuel-injection apparatus, not otherwise provided for · CPC title

• F02D41/123

  the fuel injection being cut-off · CPC title

• F02D41/20

  Output circuits, e.g. for controlling currents in command coils · CPC title

• F02D41/266

  the computer being backed-up or assisted by another circuit, e.g. analogue · CPC title