OIL PAN AND ENGINE ASSEMBLY INCLUDING THE OIL PAN

• US 20160222845A1
• Filed: 07/31/2015
• Published: 08/04/2016
• Est. Priority Date: 02/02/2015
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Zahdeh, Akram R.
• Granted Patent: US 9,664,077 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01M 11/0004 Oilsumps
• CPC Class Codes: F01M 2005/023 Oil sump with partition for facilitating heating of oil during starting
• CPC Class Codes: F01M 2011/0025 with heat exchangers
• CPC Class Codes: F01M 2011/0037 with different oil compartments
• CPC Class Codes: F01M 2011/0045 for controlling the oil temperature
• CPC Class Codes: F01M 5/001 Heating

Abstract

An engine assembly includes an oil pan having an oil pan body. The oil pan body includes an inner pan surface defining a cavity configured to collect oil and an outer pan surface opposite the inner pan surface. Further, the oil pan includes a dividing wall disposed within the cavity and coupled to the oil pan body. The dividing wall divides the cavity into a first compartment and a second compartment. The oil pan defines an opening extending through the dividing wall. A valve is disposed in the opening and can move between an open position and a closed position. When the valve is in the open position, the first compartment is in fluid communication with the second compartment. When the valve is in the closed position, the valve blocks fluid flow between the first compartment and the second compartment via the opening.

Claims

1. An engine assembly, comprising:

an oil pan including an oil pan body, wherein the oil pan body includes;

an inner pan surface defining a cavity configured to collect oil;

an outer pan surface opposite the inner pan surface;

a dividing wall disposed within the cavity and coupled to the oil pan body, wherein the dividing wall divides the cavity into a first compartment and a second compartment, and the dividing wall defines an opening extending therethrough;

a valve disposed in the opening, the valve being movable relative to the dividing wall between an open position and a closed position;

wherein, when the valve is in the open position, the first compartment is in fluid communication with the second compartment via the opening; and

wherein, when the valve is in the closed position, the valve blocks fluid flow between the first compartment and the second compartment via the opening.

2. The engine assembly of claim 1, further comprising a heat exchanger disposed within the first compartment, wherein the heat exchanger is configured to facilitate heat transfer between the oil in the first compartment and a heat transfer fluid flowing through the heat exchanger.

3. The engine assembly of claim 1, wherein the first compartment has a first volume, the second compartment has a second volume, and the first volume is less than the second volume.

4. The engine assembly of claim 1, wherein the oil pan body defines a sidewall defining a perimeter of the oil pan, the sidewall has a first height, the dividing wall has a second height, and the first height is greater than the second height.

5. The engine assembly of claim 1, further comprising a controller in communication with the valve such that the controller is capable of commanding the valve to move between the open position and the closed position.

6. The engine assembly of claim 5, further comprising a temperature sensor in the first compartment, wherein the temperature sensor is configured to measure a temperature of the oil in the first compartment.

7. The engine assembly of claim 6, wherein the controller is in communication with the temperature sensor such that the controller is capable of receiving a temperature signal indicative of the temperature of the oil in the first compartment.

8. The engine assembly of claim 7, wherein the controller is programmed to command the valve to move from the closed position to the open position when the temperature of the oil in the first compartment is greater than a predetermined temperature.

9. The engine assembly of claim 8, further comprising a heat exchanger disposed within the first compartment, wherein the heat exchanger is configured to facilitate heat transfer between the oil in the first compartment and a heat transfer fluid flowing through the heat exchanger, the engine assembly further includes a fluid transfer pump in fluid communication with the heat exchanger, and the controller is in communication with the fluid transfer pump such that the controller is capable of commanding the fluid transfer pump to adjust a pump power in order to adjust a flowrate of the heat transfer fluid.

10. The engine assembly of claim 9, wherein the predetermined temperature is a first predetermined temperature, the controller is programmed to increase the pump power when the temperature of the oil in the first compartment is greater than a second predetermined temperature, and the second predetermined temperature is greater than the first predetermined temperature.

11. The engine assembly of claim 1, wherein a volume of the first compartment ranges between ¼

to ⅕

of a total volume of the cavity, and a volume of the second compartment ranges between ¾ and

⅘

of the total volume of the cavity.

12. An oil pan, comprising:

an oil pan body including;

a sidewall defining a perimeter of the oil pan body;

a bottom wall coupled to the sidewall, wherein the bottom wall and the sidewall collectively define a cavity;

a dividing wall disposed within the cavity and coupled to the oil pan body, wherein the dividing wall divides the cavity into a first compartment and a second compartment, and the dividing wall defines an opening extending therethrough;

a valve disposed in the opening, the valve being movable relative to the dividing wall between an open position and a closed position;

wherein, when the valve is in the open position, the first compartment is in fluid communication with the second compartment via the opening; and

wherein, when the valve is in the closed position, the valve blocks fluid flow between the first compartment and the second compartment via the opening.

13. The oil pan of claim 12, further comprising a heat exchanger disposed within the first compartment, wherein the heat exchanger is configured to facilitate heat transfer between the oil in the first compartment and a heat transfer fluid flowing through the heat exchanger.

14. The oil pan of claim 12, wherein the first compartment has a first volume, the second compartment has a second volume, and the first volume is less than the second volume.

15. The oil pan of claim 12, wherein the sidewall has a first height, the dividing wall has a second height, and the first height is greater than the second height.

16. The oil pan of claim 12, further comprising a drip pan coupled to the sidewall and disposed at least partly within the cavity, wherein the dripping pan is obliquely angled relative to the sidewall.

17. The oil pan of claim 12, wherein a volume of the first compartment ranges between ¼

to ⅕

of a total volume of the cavity, and a volume of the second compartment ranges between ¾ and

⅘

of the total volume of the cavity

18. A vehicle, comprising:

an oil pan including an oil pan body, wherein the oil pan body includes;

an inner pan surface defining a cavity configured to collect oil;

an outer pan surface opposite the inner pan surface;

a dividing wall disposed within the cavity and coupled to the oil pan body, wherein the dividing wall divides the cavity into a first compartment and a second compartment, and the dividing wall defines an opening extending therethrough;

a valve disposed in the opening, the valve being movable relative to the dividing wall between an open position and a closed position;

wherein, when the valve is in the open position, the first compartment is in fluid communication with the second compartment via the opening;

wherein, when the valve is in the closed position, the valve blocks fluid flow between the first compartment and the second compartment via the opening; and

a controller in communication with the valve such that the controller is capable of commanding the valve to move between the open position and the closed position.

19. The vehicle of claim 18, further comprising a temperature sensor in the first compartment, wherein the temperature sensor is configured to measure a temperature of the oil in the first compartment.

20. The vehicle of claim 18, wherein a volume of the first compartment ranges between ¼

to ⅕

of a total volume of the cavity, and a volume of the second compartment ranges between ¾ and

⅘

of the total volume of the cavity.