Vehicle stop/start system with regenerative braking

• US 20080217083A1
• Filed: 03/07/2007
• Published: 09/11/2008
• Est. Priority Date: 03/07/2007
• Status: Active Grant

• Current Assignee: Gates Corporation (Gates Industrial Corp. Plc)
• Original Assignee: Gates Corporation (Gates Industrial Corp. Plc)
• Inventors: Serkh, Alexander, Ali, Imtiaz, Kosanovic, Dragan
• Granted Patent: US 7,552,705 B2
• Time in Patent Office: Days
• US Class Current: 180/165
• CPC Class Codes: B60K 6/28 characterised by the electric energy storing means, e.g. batteries or capacitors
• CPC Class Codes: B60K 6/40 characterised by the assembly or relative disposition of components
• CPC Class Codes: B60L 1/02 to electric heating circuits
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2240/486 Operating parameters
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• 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 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2050/0004 In digital systems, e.g. discrete-time systems involving sampling
• CPC Class Codes: B60W 2510/0604 Throttle position
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2540/16 Ratio selector position
• 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: Y02T 10/62 : Hybrid vehicles
• 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

A vehicle engine stop/start system with regenerative braking comprising a main engine for powering a vehicle having an accessory belt drive system, a motor/generator engaged with the accessory belt drive system, an operator activated switch for selecting an operating mode, in a first operating mode an electric energy storage portion for providing electric power to a heating system when the main engine is off, a relay for preventing operation of the heating system when the main engine is running, in a second operating mode the electric energy storage portion providing electric power to the motor/generator whereby the motor/generator drives an air conditioning compressor when the main engine is off, the air conditioning compressor connected to the accessory belt drive system, a relay for preventing operation of the air conditioning compressor using the motor/generator when the main engine is running, in a third operating mode the motor/generator is used to start the main engine after the main engine has been automatically stopped, and in a fourth operating mode during operation of the main engine the motor/generator generates an electric current during vehicle braking whereby the electric energy storage portion is recharged.

Claims

1. A vehicle engine stop/start system with regenerative braking comprising:

a main engine for powering a vehicle having an accessory belt drive system;

a motor/generator engaged with the accessory belt drive system;

an operator activated switch for selecting an operating mode;

in a first operating mode an electric energy storage portion for providing electric power to a heating system when the main engine is off;

a relay for preventing operation of the heating system when the main engine is running;

in a second operating mode the electric energy storage portion providing electric power to the motor/generator whereby the motor/generator drives an air conditioning compressor when the main engine is off, the air conditioning compressor connected to the accessory belt drive system;

a relay for preventing operation of the air conditioning compressor using the motor/generator when the main engine is running;

in a third operating mode the motor/generator is used to start the main engine after the main engine has been automatically stopped; and

in a fourth operating mode during operation of the main engine the motor/generator generates an electric current during vehicle braking whereby the electric energy storage portion is recharged.

2. The vehicle engine stop/start system with regenerative braking as in claim 1 wherein the electric energy storage portion comprises a battery.

3. The vehicle engine stop/start system with regenerative braking as inn claim 1 further comprising:

a CAN controller;

a throttle position sensor detecting a throttle movement; and

the throttle position sensor sending a signal to the CAN controller whereby the main engine is automatically started upon receiving the throttle position sensor signal.

4. The vehicle engine stop/start system with regenerative braking as in claim 1 further comprising:

a CAN controller;

a brake position sensor detecting a brake position;

the brake position sensor sending a signal to the CAN controller whereby the main engine is automatically started upon receiving the brake sensor signal.

5. The vehicle engine stop/start system with regenerative braking as in claim 1 further comprising:

a CAN controller;

a transmission status sensor;

the transmission status sensor sending a signal to the CAN controller whereby the main engine is automatically started upon receiving the transmission status signal.

6. The vehicle engine stop/start system with regenerative braking as in claim 1 further comprising an auxiliary power unit engaged with the accessory belt drive belt.