Fuel saving driving diagnostic device and fuel saving driving diagnostic system

• US 9,663,116 B2
• Filed: 07/07/2014
• Issued: 05/30/2017
• Est. Priority Date: 07/16/2013
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Saito, Kan
• Primary Examiner(s): PAIGE, TYLER D
• Application Number:
  US14/898,221
• Publication Number:
  US 20160288800A1
• Time in Patent Office: 1,058 Days
• Field of Search: 701 291, 123399
• CPC Class Codes: B60K 2360/174 Economic driving
• CPC Class Codes: B60K 2370/174 Economic driving
• CPC Class Codes: B60K 35/28 characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
• CPC Class Codes: B60W 2050/143 Alarm means
• CPC Class Codes: B60W 2510/0225 Clutch actuator position
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/1005 Transmission ratio engaged
• CPC Class Codes: B60W 50/045 Monitoring control system parameters
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: F16H 2059/366 Engine or motor speed
• CPC Class Codes: F16H 2061/0015 Transmission control for optimising fuel consumptions
• CPC Class Codes: F16H 2061/022 Calculation or estimation of optimal gear ratio, e.g. best ratio for economy drive or performance according driver preference, or to optimise exhaust emissions
• CPC Class Codes: Y02T 10/40 Engine management systems
• CPC Class Codes: Y02T 10/60 Other road transportation technologies with climate change mitigation effect
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 10/84 Data processing systems or methods, management, administration

Abstract

A fuel saving driving diagnostic device includes an ECU that diagnoses fuel saving driving from a viewpoint of accelerator operation based on a relation between a parameter related to a vehicle speed and a parameter related to an accelerator operation amount and diagnoses fuel saving driving from a viewpoint of shift operation based on a relation between a parameter related to a vehicle speed and a parameter related to an engine speed.

Claims

1. A fuel saving driving diagnostic device comprising:

an electronic control unit

configured to diagnose fuel saving driving from a viewpoint of accelerator operation based on a relation between a parameter related to a vehicle speed and a parameter related to an accelerator operation amount of an accelerator operation, and

configured to diagnose fuel saving driving from a viewpoint of a shift operation based on a relation between the parameter related to the vehicle speed and a parameter related to engine speed,

the electronic control unit outputting a display showing the diagnostic result of diagnosing fuel saving driving from the viewpoint of the accelerator operation and the diagnostic result of diagnosing fuel saving driving from the viewpoint of the shift operation in a two-axis representation.

2. The fuel saving driving diagnostic device according to claim 1, wherein the fuel saving driving from the viewpoint of the shift operation is diagnosed without considering the accelerator operation amount.

3. The fuel saving driving diagnostic device according to claim 1, wherein the electronic control unit is mounted on a manual transmission vehicle.

4. A fuel saving driving diagnostic system comprising:

a speed sensor that detects a vehicle travel speed;

an opening detection sensor that detects an accelerator pedal opening of an accelerator pedal;

an engine speed sensor that detects engine speed; and

an electronic control unit configured to perform a first diagnosis and a second diagnosis and configured to output a diagnostic result according to a diagnostic result of the first diagnosis and a diagnostic result of the second diagnosis, the first diagnosis being a diagnosis of fuel saving driving based on the travel speed and the accelerator pedal opening from the viewpoint of the operation of the accelerator pedal, the second diagnosis being a diagnosis of fuel saving driving based on the travel speed and the engine speed from the viewpoint of a shift operation,

the electronic control unit outputting a display showing the diagnostic result of diagnosing fuel saving driving from the viewpoint of the accelerator pedal operation and the diagnostic result of diagnosing fuel saving driving from the viewpoint of the shift operation in a two-axis representation.

5. The fuel saving driving diagnostic system according to claim 4, further comprising:

a detection unit that detects a disengagement state of a clutch wherein if it is determined, based on a detection result of the detection unit, that the clutch is disengaged, the electronic control unit outputs the diagnostic result that was output previously.

6. The fuel saving driving diagnostic system according to claim 4, further comprising:

a detection unit that detects a state in which a clutch is disengaged wherein

if it is determined from a detection result of the detection unit that the clutch has been disengaged continuously for a predetermined time, the electronic control unit stops the output of the diagnostic result.