Vehicle traveling state recording method and computer for engine control

• US 20020123834A1
• Filed: 03/04/2002
• Published: 09/05/2002
• Est. Priority Date: 03/05/2001
• Status: Active Grant

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Ogaki, Koichi
• Granted Patent: US 7,020,547 B2
• Time in Patent Office: Days
• US Class Current: 701/35
• CPC Class Codes: F02D 2200/501 Vehicle speed
• CPC Class Codes: F02D 41/021 Introducing corrections for particular conditions exterior to the engine conjoint control of vehicle sub-units for propelling the vehicle B60W30/18
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

Information indicating traveling states such as a traveling speed SPD is recorded in a computer for engine control. The recorded information can be read out using a self-diagnostic function after stopping of a vehicle. By a simple operation of grounding a certain terminal, it can also be displayed simply by blinking of a CE lamp. Since the record with high reliability remains, use can be made as materials on fair regulation.

Claims

1. A vehicle traveling state recording method comprising the steps of:

recording information on traveling states including a traveling speed of a vehicle in a computer for engine control during the vehicle is running; and

reading the recorded information out by a predetermined operation.

2. The vehicle traveling state recording method as defined in claim 1, wherein the recorded information is read after stopping the vehicle.

3. The vehicle traveling state recording method as defined in claim 1, wherein the information on the traveling states is recorded in predetermined cycles;

and

at least the predetermined cycles of the information is read out after stopping of travel of the vehicle.

4. The vehicle traveling state recording method as defined in claim 1, wherein the recorded information on the traveling states is read out by a tool for diagnosis adapted for the computer for engine control.

5. The vehicle traveling state recording method as defined in claim 1, further comprising:

changing a connection state of a predetermined terminal of the computer for engine control to perform the predetermined operation; and

displaying the recorded traveling speed displayed in a blinking state of a lamp according to a preset code.

6. The vehicle traveling state recording method as defined in claim 1, further comprising:

changing a connection state of a predetermined terminal of the computer for engine control to perform the predetermined operation; and

displaying the recorded traveling speed on a speed meter of the vehicle.

7. The vehicle traveling state recording method as defined in claim 1, further comprising:

mounting a navigator for retrieving a speed limit of a road during travel in the vehicle; and

recording the information together with the speed limit retrieved by the navigator.

8. The vehicle traveling state recording method as defined in claim 1, wherein the information on the traveling states further includes:

a number of revolutions of an engine;

a intake manifold pressure; and

an opening angle of a throttle.

9. A computer mounted in a vehicle and controlling an engine according to a preset program, the computer comprising:

an input section for inputting information on traveling states including a traveling speed of the vehicle;

a memory for recording the information inputted to the input section; and

a controller for controlling the information to be sequentially recorded into the memory in predetermined cycles, the controller for controlling the information in the memory to be outputted in response to a predetermined operation.

10. The computer as defined in claim 9, wherein the input section receives a vehicle speed signal inputted to a speed meter of the vehicle as the information indicating the traveling speed.

11. The computer as defined in claim 10, further comprising a signal generator for generating the vehicle speed signal in a simulation manner and providing the signal for the speed meter according to the information when the controller outputs the information recorded into the memory.

12. The computer as defined in claim 9, wherein the information on the traveling states further includes:

a number of revolutions of an engine;

a intake manifold pressure; and

an opening angle of a throttle.