CONTROL SYSTEM FOR VEHICLE DRIVE SYSTEM HAVING SUPERCHARGER AND ACCESSORIES

• US 20150183421A1
• Filed: 03/13/2015
• Published: 07/02/2015
• Est. Priority Date: 09/14/2012
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: BALIFF, Mark R.
• Granted Patent: US 9,656,660 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 2025/005 driven by electric motors forming part of the propulsion unit
• CPC Class Codes: B60K 2025/022 by a mechanical transmission
• 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 10/26 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 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 50/02 Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
• CPC Class Codes: F02B 33/34 with rotary pumps with cell-type pressure exchangers or the like F02B33/42
• CPC Class Codes: F02B 39/04 Mechanical drives; Variable-gear-ratio drives non-mechanical pump drives having variable gear ratio F02B39/08
• CPC Class Codes: F02B 39/10 electric
• CPC Class Codes: F02B 39/12 Drives characterised by use of couplings or clutches therein using fluid slip couplings for varying gear ratio F02B39/08
• CPC Class Codes: F02B 67/06 driven by means of chains, belts, or like endless members
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/93 Conjoint control of different elements

Abstract

A drive system includes a drive belt, an engine, a motor, and a supercharger for delivering compressed air to an intake of the engine, and a controller for setting the operational mode of the drive system. The engine and motor are selectively engageable with the drive belt, and the supercharger is selectively engageable with the motor. A method of controlling an operational mode of such a drive system includes detecting a throttle position. Thereafter, the method includes selectively engaging the engine with the drive belt or the drive belt with the motor or the motor with the supercharger, based at least in part on the throttle position.

Claims

1. A drive system for a vehicle, the drive system comprising:

a drive belt;

an engine selectively engageable with the drive belt;

a motor selectively engageable with the drive belt;

a supercharger for delivering compressed air to an intake of the engine, wherein the supercharger is selectively engageable with the motor; and

a controller for setting an operational mode of the drive system,

wherein when in a power mode, the controller engages the engine with the drive belt, the controller engages the supercharger with the motor so as to deliver compressed air from the supercharger to the intake of the engine, and the controller disengages the motor from the drive belt; and

wherein when in a cruise mode, the controller disengages the engine from the drive belt, the controller engages the supercharger with the motor so as to deliver compressed air from the supercharger to the intake of the engine, and the controller engages the motor with the drive belt.

2. The drive system of claim 1,

wherein when in a regeneration mode, the controller engages the engine with the drive belt, the controller disengages the supercharger from the motor, and the controller engages the motor with the drive belt.

3. The drive system of claim 2,

wherein when in an engine off mode, the controller engages the motor with the drive belt, and the controller disengages the supercharger from the motor.

4. The drive system of claim 1, further comprising a sensor associated with at least one of the engine, the accessories, the motor, and the supercharger, wherein the sensor sends a signal to the controller.

5. The drive system of claim 3, further comprising an inverter electrically coupled to the motor and a battery electrically coupled to the inverter.

6. The drive system of claim 5, wherein when in each of the power mode and the cruise mode, the battery delivers electrical power to the motor.

7. The drive system of claim 3, wherein when in the engine off mode, the battery delivers electrical power to the motor based on a need condition of the at least one accessory.

8. The drive system of claim 1, further comprising an engine clutch for engaging the engine with the drive belt, a motor clutch for engaging the motor with the drive belt, and a supercharger clutch for engaging the supercharger with the motor.

9. The drive system of claim 1, wherein the controller sets the operation state based on at least one of an engine load, a requested torque, a voltage state, an engine RPM, and a need condition.

10. The drive system of claim 1, further comprising at least one accessory engaged with the drive belt.

13. The method of claim 1, wherein the controller sets the drive system to the cruise mode based at least in part on an engine RPM signal and a load signal.

11. A method of setting an operational mode of a drive system comprising a drive belt, an engine, a motor, and a supercharger for delivering compressed air to an intake of the engine, and a controller for setting the operational mode of the drive system, the method comprising:

wherein when in a power mode, the controller engages the engine with the drive belt, the controller engages the supercharger with the motor so as to deliver compressed air from the supercharger to the intake of the engine, and the controller disengages the motor from the drive belt;

wherein when in a cruise mode, the controller disengages the engine from the drive belt, the controller engages the supercharger with the motor so as to deliver compressed air from the supercharger to the intake of the engine, and the controller engages the motor with the drive belt;

wherein when in a regeneration mode, the controller engages the engine with the drive belt, the controller disengages the supercharger from the motor, and the controller engages the motor with the drive belt; and

wherein when in an engine-off mode, the controller disengages the motor from the drive belt, the controller disengages the supercharger from the motor, and the controller disengages the supercharger from the motor.

12. The method of claim 11, wherein the controller sets the drive system to the power mode based at least in part on a throttle position signal.

14. The method of claim 11, wherein the controller sets the drive system to the regeneration mode based at least in part on a state-of-charge of a battery.

15. The method of claim 11, wherein the controller sets the drive system to the engine-off mode based at least in part on a state-of-charge of a battery and a need condition.

16. The method of claim 11, wherein the controller sends a signal to at least one of an engine clutch for engaging the engine with the drive belt, a motor clutch for engaging the motor with the drive belt, and a supercharger clutch for engaging the supercharger with the motor, based on a set operational mode.

17. A method of setting an operational mode of a drive system comprising a drive belt, an engine, a motor, and a supercharger for delivering compressed air to an intake of the engine, and a controller for setting the operational mode of the drive system, the method comprising:

detecting a throttle position; and

selectively engaging at least one the engine with the drive belt, the drive belt with the motor, and the motor with the supercharger, based at least in part on the throttle position.

18. The method of claim 17, wherein selectively engaging comprises engaging a clutch with a drive.

19. The method of claim 18, wherein the drive comprises at least one of a belt drive and a direct drive.