VEHICLE DIAGNOSIS SYSTEM AND METHOD

• US 20170084092A1
• Filed: 12/06/2016
• Published: 03/23/2017
• Est. Priority Date: 12/25/2013
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Ohsaki, Satoru
• Granted Patent: US 11,279,357 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60R 16/0236 for economical driving
• CPC Class Codes: B60T 17/221 Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M
• CPC Class Codes: B60W 20/50 Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
• CPC Class Codes: B60W 30/18018 Start-stop drive, e.g. in a traffic jam
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: B60W 30/192 Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
• CPC Class Codes: F02D 41/042 for stopping the engine
• CPC Class Codes: F02D 41/22 Safety or indicating devices for abnormal conditions in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809
• CPC Class Codes: F02D 41/26 using computer, e.g. microprocessor
• CPC Class Codes: F02N 11/0818 Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
• CPC Class Codes: F02N 11/0825 related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
• CPC Class Codes: G07C 5/00 Registering or indicating the working of vehicles
• CPC Class Codes: G07C 5/004 Indicating the operating range of the engine economical driving B60R16/0236, F02B77/084; measuring liquid fuel of an engine G01F9/00
• CPC Class Codes: G07C 5/0808 Diagnosing performance data testing of vehicles G01M17/00; testing of electrical installation on vehicles G01R31/005
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction
• CPC Class Codes: G07C 5/0825 using optical means
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y10S 903/904 Component specially adapted for hev

Abstract

A vehicle diagnosis system includes an abnormality determiner for determining whether a vehicle having an abnormality regarding a temporal engine stop function or a power regeneration function is caused in a mode that cancels a greenhouse gas reduction effect of the engine. When an abnormality that cancels, due to disablement of the temporal engine stop function or the power regeneration function, such an abnormality is quickly notified to a driver of the vehicle by the vehicle diagnosis system so that the abnormality is quickly fixed.

Claims

1. A vehicle diagnosis system disposed in a vehicle, the vehicle diagnosis system comprising:

an accelerator-off counter counting accelerator-offs each of which representing an occurrence of an accelerator-off state;

a temporal-stop counter counting temporal-stops of an engine during an accelerator-off period; and

one of

an output section outputting an accelerator-offs count and a temporal-stops count to an external device that is different from the vehicle, or

an abnormality determiner determining whether a vehicle abnormality regarding a temporal-stop of the engine is caused, which cancels a greenhouse gas reduction effect by the temporal stop of the engine, based on the accelerator-offs count and the temporal-stops count.

4. The vehicle diagnosis system of claim 1, wherein

the accelerator-offs count represents (i) a number of accelerator-offs or (ii) a cumulative total time of accelerator-offs.

5. The vehicle diagnosis system of claim 1, wherein

the accelerator-offs count represents an estimation of a savable fuel amount if the temporal-stop of the engine were performed during all accelerator-off periods.

6. The vehicle diagnosis system of claim 1, wherein

the temporal-stops count represents (i) a number of temporal-stops during the accelerator-off periods or (ii) an accumulated time of temporal-stops during the accelerator-off periods.

7. The vehicle diagnosis system of claim 1, wherein

the temporal-stops count represents an accumulated amount of fuel saved by the temporal-stops of the engine during the accelerator-off periods.

2. A vehicle diagnosis system disposed in a vehicle, the vehicle diagnosis system comprising:

an accelerator-off counter counting accelerator-offs that represent a number of occurrences of an accelerator-off state;

an inactive temporal-stop counter counting inactive temporal-stops of the engine during an accelerator-off period; and

one of

an output section outputting an accelerator-offs count and an inactive temporal-stops count to an external device that is different from the vehicle, or

an abnormality determiner determining whether a vehicle abnormality regarding a temporal-stop of the engine is caused, which cancels a greenhouse gas reduction effect by the temporal-stop of the engine, based on the accelerator-offs count or the inactive temporal-stops count.

8. The vehicle diagnosis system of claim 2, wherein

the inactive temporal-stops count represents (i) a number of inactive temporal-stops during the accelerator-off periods or (ii) an accumulated time of inactive temporal-stops during the accelerator-off periods.

9. The vehicle diagnosis system of claim 2, wherein

the inactive temporal-stops count represents an accumulated amount of fuel used by an idling of the engine during the accelerator-off periods.

3. A vehicle diagnosis system disposed in a vehicle, the vehicle diagnosis system comprising:

a temporal-stop counter counting temporal-stops of an engine of the vehicle during an accelerator-off period;

an inactive temporal-stop counter counting inactive temporal-stops of the engine during the accelerator-off period; and

one of

an output section outputting a temporal-stops count and an inactive temporal-stop voidings count to an external device that is different from the vehicle, or

an abnormality determiner determining whether a vehicle abnormality regarding a temporal-stop of the engine is caused, which cancels a greenhouse gas reduction effect by the temporal-stop of the engine, based on the temporal-stops count or the inactive temporal-stops count.