Energy control systems and methods for a powertrain of a vehicle

Patent metadata

Field	Value
Publication number	US-9238995-B2
Application number	US-201213673269-A
Country	US
Kind code	B2
Filing date	Nov 9, 2012
Priority date	Nov 9, 2012
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A system includes a mode module and an energy module. The mode module generates a mode signal based on a temperature of an engine and at least one of a deceleration signal and a regenerative braking signal. The energy module, based on the mode signal, increases cooling of a coolant of the engine during at least one of a deceleration event of a vehicle and a regenerative braking event. The energy module, while increasing the cooling of the coolant, supplies an overvoltage to a cooling pump of the engine.

First claim

What is claimed is:

1. A system comprising:
a mode module that generates a mode signal based on a temperature of an engine and at least one of a deceleration signal and a regenerative braking signal; and
an energy module that, based on the mode signal, increases cooling of a coolant of the engine during at least one of a deceleration event of a vehicle and a regenerative braking event,
wherein the energy module, while increasing the cooling of the coolant, supplies an overvoltage to a cooling pump of the engine.

2. The system of claim 1 , wherein the energy module, while increasing the cooling of the coolant, maximizes a cooling rate of the coolant including generating a fan signal indicating operation of a cooling fan in a full ON state.

3. The system of claim 1 , wherein the energy module, while increasing the cooling of the coolant, maximizes a cooling rate of the coolant including generating a shutter signal indicating opening an air flow shutter of a radiator to a fully open position.

4. The system of claim 1 , wherein the overvoltage is a voltage greater than a predetermined voltage.

5. The system of claim 1 , wherein the overvoltage is a voltage greater than a rated operating voltage of the cooling pump.

6. The system of claim 1 , wherein the overvoltage is a voltage greater than a maximum operating voltage of the cooling pump used during non-deceleration events and non-regenerative braking events.

7. The system of claim 1 , wherein the temperature is one of a coolant temperature and an oil temperature.

8. The system of claim 1 , wherein:
the mode module generates the mode signal based on the deceleration signal; and
the deceleration signal indicates deceleration of the vehicle.

9. The system of claim 1 , wherein:
the mode module generates the mode signal based on the deceleration signal; and
the deceleration signal indicates a deceleration fuel cutoff event.

10. The system of claim 1 , further comprising a regenerative braking module that generates the regenerative braking signal in response to engine braking,
wherein the mode module generates the mode signal based on the regenerative braking signal.

11. The system of claim 1 , further comprising a regenerative braking module that generates the regenerative braking signal in response to wheel braking,
wherein the mode module generates the mode signal based on the regenerative braking signal.

12. The system of claim 1 , wherein the energy module:
operates the cooling pump in a fully ON state during the deceleration event; and
increases cooling of the coolant during an acceleration event, wherein the acceleration event occurs subsequent to the deceleration event.

13. The system of claim 12 , wherein the energy module:
at least one of decreases a speed of the cooling pump and disables the cooling pump during a first zero-acceleration event, wherein the deceleration event occurs subsequent to the first zero-acceleration event; and
at least one of decreases speed and disables the cooling pump during a second zero-acceleration event, wherein the second zero-acceleration event occurs subsequent to the deceleration event, wherein the acceleration event occurs subsequent to the second zero-acceleration event, and wherein the speed of the cooling pump
is greater during the acceleration event than during the second zero-acceleration event, and
is less during the acceleration event than during the deceleration event.

14. The system of claim 1 , wherein:
the mode module generates the mode signal based the deceleration signal and the regenerative braking signal; and
the energy module, based on the mode signal, increases the cooling of the coolant during the deceleration event of the vehicle and the regenerative braking event.

15. A method comprising:
generating a mode signal based on a temperature of an engine and at least one of a deceleration signal and a regenerative braking signal;
based on the mode signal, increasing cooling of a coolant of the engine during at least one of a deceleration event of a vehicle and a regenerative braking event; and
supplies an overvoltage to a cooling pump of the engine while increasing the cooling of the coolant.

16. The method of claim 15 , wherein, while increasing the cooling of the coolant, maximizing a cooling rate of the coolant including generating:
a fan signal indicating operation of a cooling fan in a full ON state; and
a shutter signal indicating opening an air flow shutter of a radiator to a fully open position.

17. The method of claim 15 , wherein the overvoltage a voltage greater than:
a predetermined voltage; and
a maximum operating voltage of the cooling pump used during non-deceleration events and non-regenerative braking events.

18. The method of claim 15 , wherein the deceleration signal indicates at least one of a deceleration of the vehicle and a deceleration fuel cutoff event.

19. The method of claim 15 , further comprising:
generating the regenerative braking signal in response to at least one of engine braking and wheel braking; and
generating the mode signal based on the regenerative braking signal.

20. The method of claim 15 , further comprising:
generating the mode signal based the deceleration signal and the regenerative braking signal; and
based on the mode signal, increasing the cooling of the coolant during the deceleration event of the vehicle and during the regenerative braking event.

Assignees

• Gm Global Tech Operations Inc

Inventors

• Gonze Eugene V
• Smith Stuart R
• Stanek Jennifer M

Classifications

• F01P7/164

  by varying pump speed · CPC title

• F01P7/167 Primary

  by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed · CPC title

• Y02T10/6286

  Cross-Sectional Technologies · mapped topic

• Y02T10/62

  Hybrid vehicles · CPC title