# US 11,305,770 B2 · Vehicle having controllable target driving force

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- Number: US 11,305,770 B2
- Document ID: US11305770B2
- Status: Granted
- Kind: B2
- Application number: 16/837,180
- Filed: 2020-04-01
- Published: 2021-01-07
- Granted: 2022-04-19
- Earliest claimed: 2019-07-03
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Takahiko Hirasawa; Keiji Kaita
- Web page: https://patentgrep.com/patent/US11305770B2

## CPC

- B60K 6/445: Differential gearing distribution type
- B60W 30/18072: {Coasting}
- B60K 6/46: Series type
- B60K 6/48: Parallel type
- B60L 50/16: with provision for separate direct mechanical propulsion
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B60L 50/61: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
- B60W 10/04: including control of propulsion units
- B60W 30/20: Reducing vibrations in the driveline
- B60W 50/06: Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot
- B60W 50/10: Interpretation of driver requests or demands
- B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft}
- B60L 2240/16: longitudinal
- B60L 2250/16: by display
- B60L 2250/28: Accelerator pedal thresholds
- B60W 2510/0604: Throttle position
- B60W 2520/10: Longitudinal speed
- B60W 2540/10: Accelerator pedal position
- B60W 2540/106: Rate of change
- Y02T 10/62: Hybrid vehicles
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 10/72: Electric energy management in electromobility
- 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
- 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
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A vehicle includes a drive device for traveling, and a control device configured to control the drive device so that the vehicle travels with a target driving force based on an accelerator operation amount. The control device is configured to set the target driving force such that a change in the target driving force with respect to a change in the accelerator operation amount is gentler in a case where steady traveling is desired as compared with a case where the steady traveling is not desired. Therefore, in a case where the steady traveling is desired, a variation of a vehicle speed with respect to a slight variation of the accelerator operation amount can be gentle and continuous steady traveling can be facilitated.

## Claims

### Claim 1

A vehicle comprising:
a drive device for traveling; and
a control device configured to control the drive device so that the vehicle travels with a target driving force based on an accelerator operation amount,
wherein the control device is configured to set the target driving force such that a change in the target driving force with respect to a change in the accelerator operation amount is gentler in a case where steady traveling is desired as compared with a case where the steady traveling is not desired, and
wherein the control device is configured to set a request driving force for traveling based on the accelerator operation amount and a vehicle speed or a driving force obtained by performing smoothing on the request driving force as the target driving force, and determine that the steady traveling is desired in a case where a difference between the request driving force and travel resistance is equal to or smaller than a predetermined difference.

### Claim 2 (depends on 1)

The vehicle according to claim 1, wherein the control device is configured to determine that the steady traveling is desired in a case where the difference between the request driving force and the travel resistance is equal to or smaller than the predetermined difference and a variation amount of the accelerator operation amount for a predetermined time is equal to or smaller than a predetermined variation amount.