Liquid-cooled internal combustion engine

Patent metadata

Field	Value
Publication number	US-10801437-B2
Application number	US-201815886760-A
Country	US
Kind code	B2
Filing date	Feb 1, 2018
Priority date	Feb 10, 2017
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

An internal combustion engine with coolant jackets is provided. The internal combustion engine includes a cylinder head coupled to a cylinder block to form a first cylinder, an upper head-associated coolant jacket including a coolant conduit traversing the cylinder head, a lower head-associated coolant jacket fluidly separated from the upper cylinder head coolant jacket and including a coolant conduit traversing the cylinder head vertically below the upper head-associated coolant jacket, and a block-associated coolant jacket including, a first coolant passage having an inlet in fluidic communication with a coolant pump outlet and an outlet in fluidic communication with an inlet of the lower head-associated coolant jacket, and a second coolant passage having an inlet in fluidic communication with an outlet of the lower head-associated coolant jacket and an outlet in fluidic communication with a heat exchanger.

First claim

The invention claimed is:

1. A supercharged internal combustion engine comprising:
a cylinder head; and
a cylinder block coupled to the cylinder head to form a first cylinder in the supercharged internal combustion engine;
where the first cylinder has on an inlet side an inlet opening supplying combustion air via an intake system and on an outlet side an outlet opening for discharging exhaust gases via an exhaust-gas discharge system;
where the cylinder block is equipped with two integrated coolant jackets, where a first block coolant jacket is provided on the outlet side and has a supply opening for supplying coolant to the first block coolant jacket, and a second block coolant jacket is provided on the inlet side and has a discharge opening for discharging the coolant;
where the cylinder head is equipped with an integrated head coolant jacket comprising an upper cylinder head jacket and a lower cylinder head jacket not connected to one another within the cylinder head;
where a coolant pump provides independent coolant supply to the upper cylinder head jacket and to the lower cylinder head jacket;
where the lower cylinder head jacket is connected to the first block coolant jacket to supply coolant and to the second block coolant jacket for the purpose of discharging the coolant;
where the first block coolant jacket and the second block coolant jacket are each positioned integrally in the cylinder block; and
where the first block coolant jacket and the second block coolant jacket of a cylinder block blank are discrete and separate passages and are not connected to one another within the cylinder block.

2. The supercharged internal combustion engine of claim 1 , wherein the supply opening is arranged in a side wall of the cylinder block and is connected to the coolant pump, and
an upper cylinder head jacket supply line provides coolant flow to the upper cylinder head jacket independent from the lower cylinder head jacket.

3. The supercharged internal combustion engine of claim 1 , further comprising a first valve controlling flow through the supply opening of the first block coolant jacket and a second valve controlling flow to the upper cylinder head jacket.

4. The supercharged internal combustion engine of claim 2 , where a lower cylinder head coolant jacket only receives coolant from the first block coolant jacket, and the second block coolant jacket only receives coolant from the lower cylinder head coolant jacket.

5. The supercharged internal combustion engine of claim 1 , where the upper cylinder head jacket is connected to the coolant pump via an external supply line receiving coolant flow independent from the first block coolant jacket and lower cylinder head jacket.

6. The supercharged internal combustion engine of claim 1 , where the lower cylinder head jacket encloses an exhaust gas line around an entire circumference of the exhaust gas line in a selected location.

7. The supercharged internal combustion engine of claim 1 , where the lower cylinder head jacket encloses an intake line around an entire circumference of the intake line in a selected location.

8. The supercharged internal combustion engine of claim 1 , wherein the coolant pump is a variable to independently regulate the amount of coolant flow to an upper cylinder head jacket and the first block coolant jacket.

9. The supercharged internal combustion engine of claim 8 , wherein the coolant pump is electric.

10. An internal combustion engine comprising:
a cylinder head coupled to a cylinder block to form a first cylinder;
an upper head coolant jacket including a coolant conduit traversing the cylinder head;
a lower head coolant jacket discrete and separate from the upper head coolant jacket and not connected to the upper head coolant jacket within the cylinder head, the lower head coolant jacket including a coolant conduit traversing the cylinder head vertically below the upper head coolant jacket; and
a block coolant jacket including;
a first coolant passage having an inlet in fluidic communication with a coolant pump outlet and an outlet in fluidic communication with an inlet of the lower head coolant jacket;
a second coolant passage having an inlet in fluidic communication with an outlet of the lower head coolant jacket and an outlet in fluidic communication with a heat exchanger, and the second coolant passage is only connected to the first coolant passage via the lower head coolant jacket; and

a coolant pump providing separate and independent flow to the lower head coolant jacket and to the upper head coolant jacket.

11. The internal combustion engine of claim 10 , where at least a portion of the lower head coolant jacket is positioned vertically above an upper wall of the first cylinder and the lower head coolant jacket is a coolant connection between the first and second coolant passages of the block coolant jacket.

12. The internal combustion engine of claim 10 , the coolant conduit in the lower head coolant jacket extends from a position in the cylinder head vertically above an inlet opening of the first cylinder to a position in the cylinder head vertically above an outlet opening of the first cylinder.

13. The internal combustion engine of claim 10 , where the inlet in the first coolant passage of the block coolant jacket is positioned adjacent to the first cylinder and the outlet of the second coolant passage in the block coolant jacket is positioned adjacent to a second cylinder and no passages extend through webs between cylinders to connect the first and the second coolant passages in the block coolant jacket.

14. The internal combustion engine of claim 10 , wherein the coolant pump is an electric coolant pump variable to independently regulate an amount of coolant flow to the upper head coolant jacket and the first coolant passage of the cylinder block coolant jacket.

15. An internal combustion engine comprising:
a cylinder head coupled to a cylinder block to form a first cylinder;
an upper cylinder head coolant jacket and a lower cylinder head coolant jacket not connected to one another within the cylinder head;
a first cylinder block coolant jacket positioned on a same side of the engine as exhaust passages of the first cylinder, and the first cylinder block coolant jacket comprising an inlet for receiving coolant from a coolant pump and an outlet for outputting coolant into the lower cylinder head coolant jacket; and
a second cylinder block coolant jacket distinct and fluidly separated from the first cylinder block coolant jacket such that coolant does not flow between the first and second cylinder block coolant jackets within the cylinder block, and the second cylinder block coolant jacket comprising an inlet for receiving coolant from the lower cylinder head coolant jacket and an outlet
a coolant pump providing separate and independent flow to the upper cylinder head coolant jacket and to lower cylinder head coolant jacket, coolant provided to the lower cylinder head coolant jacket via the first cylinder block coolant jacket.

16. The internal combustion engine of claim 15 , wherein the first cylinder block coolant jacket and the second cylinder block coolant jacket are not connected to one another by passages through webs between cylinders.

17. The internal combustion engine of claim 15 , wherein the only coolant connection between the first cylinder block coolant jacket and the second cylinder block coolant jacket is the lower cylinder head coolant jacket.

18. The internal combustion engine of claim 15 , wherein the upper cylinder head coolant ja

Assignees

• Ford Global Tech Llc

Inventors

• Hopf Anselm
• Heinig Klaus-Peter
• Hemink Wilbert
• Quix Hans Guenter
• van den Heuvel Bas
• Weber Franz

Classifications

• F01P3/02 Primary

  Arrangements for cooling cylinders or cylinder heads · CPC title

• F02F1/36

  for liquid cooling · CPC title

• F01P2003/027

  Cooling cylinders and cylinder heads in parallel · CPC title

• F02F1/34

  with means for directing or distributing cooling medium · CPC title

• F01P5/10

  Pumping liquid coolant; Arrangements of coolant pumps · CPC title