# US 2015/0106002 A1 · Display device for vehicle

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- Number: US 2015/0106002 A1
- Document ID: US20150106002A1
- Status: Published application
- Kind: A1
- Application number: 14/506,571
- Filed: 2014-10-03
- Published: 2015-04-16
- Earliest claimed: 2013-10-10
- Assignees: Fuji Jukogyo Kabushiki Kaisha
- Applicants: Fuji Jukogyo Kabushiki Kaisha
- Inventors: Itaru SETA; Yosuke OHTOMO
- Web page: https://patentgrep.com/patent/US20150106002A1

## CPC

- B60W 40/00: Estimation or calculation of {non-directly measurable} driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, {e.g. by using mathematical models}
- B60K 35/22: Display screens
- 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
- B60K 2360/174: Economic driving
- B60W 30/18127: {Regenerative braking}
- B60W 2050/146: {Display means}
- B60W 2510/083: Torque
- Y02T 10/84: Data processing systems or methods, management, administration
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A vehicle speed acquisition unit acquires speed information indicating a vehicle speed. An output acquisition unit acquires output information indicating an output of a drive unit that drives the vehicle. An output rate derivation unit derives an output rate indicating a ratio of the output to a rated output of the vehicle at the current vehicle speed. A waste derivation unit derives waste information indicating a degree of waste of energy consumed by the vehicle. A display unit displays a waste status of the energy. When the speed is within a predetermined speed range and the output rate is within a preset first output range, the waste derivation unit derives the waste information indicating that the waste of energy when the speed is high is less than when the speed is low, even when the output rate is the same.

## Claims

### Claim 1

A display device for a vehicle, comprising:
a vehicle speed acquisition unit that acquires speed information indicating a vehicle speed;
an output acquisition unit that acquires output information indicating an output of a drive unit that drives the vehicle;
an output rate derivation unit that derives an output rate indicating a ratio of the output to a rated output of the vehicle at the current vehicle speed, on the basis of the speed information and the output information;
a waste derivation unit that derives waste information indicating a degree of waste of energy consumed by the vehicle according to the speed information and the output rate; and
a display unit that displays a waste status of the energy on the basis of the waste information, wherein
when the speed is within a predetermined speed range and the output rate is within a preset first output range, the waste derivation unit derives the waste information indicating that the waste of energy when the speed is high is less than when the speed is low, even when the output rate is the same.

### Claim 2 (depends on 1)

The display device for a vehicle according to claim 1, wherein
the waste derivation unit derives a numerical value as the waste information from the speed information and the output rate, and
the display unit displays whether a running state belongs to a power range indicating that the waste of energy is large or an eco range indicating that the waste of energy is small, according to the numerical value as the waste information.

### Claim 3 (depends on 2)

The display device for a vehicle according to claim 2, wherein the display unit has a display area indicating the running state belonging to the eco range, and indicates the degree of waste of energy by a current position that is identified and displayed in the display area.

### Claim 4 (depends on 3)

The display device for a vehicle according to claim 3, wherein when the output rate is in a third output range including 0, the display unit stops and displays the indication position at a predetermined position.