Hybrid vehicle

• US 10,343,529 B2
• Filed: 12/14/2017
• Issued: 07/09/2019
• Est. Priority Date: 02/06/2017
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Hosokawa, Yohei, Tabata, Masakazu, Yamane, Naruto, Hashida, Tatsuhiro
• Primary Examiner(s): Shriver, II, James A
• Assistant Examiner(s): Cassidy, Brian L
• Application Number:
  US15/841,631
• Publication Number:
  US 20180222327A1
• Time in Patent Office: 572 Days
• Field of Search: 180 6521
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: B60L 7/18 Controlling the braking effect B60L7/12, B60L7/14, B60L7/16 take precedence
• CPC Class Codes: B60T 1/10 by utilising wheel movement for accumulating energy, e.g. driving air compressors
• CPC Class Codes: B60T 2270/60 Regenerative braking
• CPC Class Codes: B60T 8/17 Using electrical or electronic regulation means to control braking detecting or indicating faulty operation B60T8/885
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 20/14 in conjunction with braking regeneration
• CPC Class Codes: B60W 2510/0676 Engine temperature
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/0605 Throttle position
• CPC Class Codes: B60W 2710/0638 Turbocharger state
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: F01P 2025/08 : Temperature
• CPC Class Codes: F01P 2050/24 : Hybrid vehicles
• CPC Class Codes: F02B 37/16 : by bypassing charging air
• CPC Class Codes: F02B 39/10 : electric
• CPC Class Codes: F02D 23/00 : Controlling engines characterised by their being supercharged
• CPC Class Codes: F02D 29/02 : peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F16D 61/00 : Brakes with means for making the energy absorbed available for use F16D57/00 takes precedence
• CPC Class Codes: Y02T 10/12 : Improving ICE efficiencies
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

The control apparatus closes the throttle, opens the bypass valve and supplies electric power to the electric compressor in a case where the remaining battery power of the battery is larger than the reference level when regenerative braking is performed with the first motor generator. The electric compressor is provided on the intake passage upstream of the throttle. The bypass valve is provided on the bypass passage that bypasses the electric compressor. According to the hybrid vehicle configured as above, regenerative braking force to be required can be obtained by performing electric power regeneration using the generator even when there is a constraint on regenerated electric power that the battery can accept.

Claims

1. A hybrid vehicle comprising:

an internal combustion engine that is coupled to a wheel via a power transmission system;

a throttle that is provided on an intake passage of the internal combustion engine;

an electric compressor that is provided on the intake passage upstream of the throttle;

a bypass passage that bypasses the electric compressor;

a bypass valve that is provided on the bypass passage;

a generator that is coupled to the wheel via the power transmission system and is capable of inputting regenerative braking force obtained by electric power regeneration to the power transmission system;

a battery that stores electric power regenerated by the generator; and

a control apparatus that is configured to completely close the throttle, open the bypass valve and supply electric power to the electric compressor in a case where remaining battery power of the battery is larger than a reference level when regenerative braking is performed with the generator.

2. The hybrid vehicle according to claim 1,

wherein, in response to the remaining battery power of the battery being larger than a reference level when the regenerative braking is performed with the generator, the control apparatus is configured to:

when an inlet temperature of the electric compressor is higher than a reference temperature, make an opening of the bypass valve smaller while being open, in comparison with a case where the inlet temperature is equal to or lower than the reference temperature.

3. The hybrid vehicle according to claim 1, further comprising;

a cooling apparatus that cools air circulating between the electric compressor and the bypass passage.

4. The hybrid vehicle according to claim 1,

wherein, when the remaining battery power of the battery is larger than the reference level when the regenerative braking is performed with the generator, the control apparatus is configured to close the throttle, open the bypass valve and supply the electric power to the electric compressor such that air is circulated between the electric compressor and the bypass passage.

5. The hybrid vehicle according to claim 1, wherein the control apparatus determines the reference level based on a water temperature of the internal combustion engine.