Engine assembly

Patent metadata

Field	Value
Publication number	US-9810173-B2
Application number	US-201514944452-A
Country	US
Kind code	B2
Filing date	Nov 18, 2015
Priority date	Nov 18, 2015
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

An engine assembly includes a cylinder head having an intake side and an exhaust side opposite the intake side. The cylinder head has an intake port, an exhaust port, and a combustion chamber in fluid communication with the intake port and the exhaust port. The engine assembly further includes a port fuel injector coupled to the cylinder head. The port fuel injector is disposed closer to the exhaust side than to the intake side of the cylinder head. Further, the port fuel injector is fluid communication with the intake port to allow fuel to be injected directly into the intake port. The engine assembly further includes a direct fuel injector coupled to the cylinder head. The direct injector is in fluid communication with the combustion chamber to allow fuel to be injected directly into the combustion chamber.

First claim

The invention claimed is:

1. An engine assembly, comprising:
a cylinder head having an intake side and an exhaust side opposite the intake side, wherein the cylinder head defines an intake port, an exhaust port, and a combustion chamber in fluid communication with the intake port and the exhaust port;
a port fuel injector coupled to the cylinder head, wherein the port fuel injector is disposed closer to the exhaust side than to the intake side of the cylinder head, and the port fuel injector is in fluid communication with the intake port to allow fuel to be injected directly into the intake port; and
a direct fuel injector coupled to the cylinder head, wherein the direct fuel injector is in fluid communication with the combustion chamber to allow fuel to be injected directly into the combustion chamber.

2. The engine assembly of claim 1 , wherein the cylinder head includes a water jacket, the water jacket defines an injector receiving opening, and the port fuel injector extends through the injector receiving opening.

3. The engine assembly of claim 1 , wherein the direct fuel injector is closer to the intake side than to the exhaust side of the cylinder head.

4. The engine assembly of claim 1 , wherein the engine assembly has an overhead valve architecture.

5. The engine assembly of claim 1 , further comprising an intake valve movably disposed in the intake port, wherein the port fuel injector has a first port fuel injector end and a second port fuel injector end opposite the first port fuel injector end, and the second port fuel injector end is adjacent the intake port such that the port fuel injector is configured to inject fuel directly into the intake port upstream of the intake valve.

6. The engine assembly of claim 1 , further comprising a port fuel injection (PFI) fuel rail in fluid communication with the port fuel injector, wherein the PFI fuel rail is closer to the exhaust side than to the intake side of the cylinder head.

7. The engine assembly of claim 1 , further comprising a direct injection (DI) fuel rail in fluid communication with the direct fuel injector, wherein the DI fuel rail is closer to the intake side than to the exhaust side of the cylinder head.

8. The engine assembly of claim 1 , further comprising an intake manifold in fluid communication with the intake port and an exhaust manifold in fluid communication with the exhaust port, wherein the direct fuel injector is closer to the intake manifold than to the exhaust manifold.

9. The engine assembly of claim 8 , wherein the port fuel injector is closer to the exhaust manifold than to the intake manifold.

10. A vehicle, comprising:
a cylinder head having an intake side and an exhaust side opposite the intake side, wherein the cylinder head defines a plurality of intake ports, a plurality of exhaust ports, and a plurality of combustion chambers, and wherein each combustion chamber is in fluid communication with one of the intake ports and one of the exhaust ports;
an engine block coupled to the cylinder head;
a plurality of port fuel injectors each coupled to the cylinder head, wherein each port fuel injector is disposed closer to the exhaust side than to the intake side of the cylinder head, and each port fuel injector is in fluid communication with one of the intake ports to allow fuel to be injected directly into said one of the intake ports; and
a plurality of direct fuel injectors each coupled to the cylinder head, wherein each direct injector is in fluid communication with one of the combustion chambers to allow fuel to be injected directly into said one of the combustion chambers.

11. The vehicle of claim 10 , wherein the cylinder head includes a water jacket, the water jacket defines a plurality of injector receiving openings, each of the port fuel injectors extends through one of the injector receiving openings.

12. The vehicle of claim 10 , wherein each of the direct fuel injectors is closer to the intake side than to the exhaust side of the cylinder head.

13. The vehicle of claim 10 , wherein the cylinder head, the engine block, the port fuel injectors, and the direct fuel injectors are part of an engine assembly, and the engine assembly has an overhead valve architecture.

14. The vehicle of claim 10 , further comprising an intake valve movably disposed in the intake port, wherein the port fuel injector has a first port fuel injector end and a second port fuel injector end opposite the first port fuel injector end, and the second port fuel injector end is adjacent the intake port such that the port fuel injector is configured to inject fuel directly into the intake port upstream of the intake valve.

15. The vehicle of claim 10 , further comprising a port fuel injection (PFI) fuel rail in fluid communication with the port fuel injectors, wherein the PFI fuel rail is closer to the exhaust side than to the intake side of the cylinder head.

16. The vehicle of claim 10 , further comprising a direct injection (DI) fuel rail in fluid communication with the direct fuel injectors, wherein the DI fuel rail is closer to the intake side than to the exhaust side of the cylinder head.

17. The vehicle of claim 10 , further comprising an intake manifold in fluid communication with the intake ports and an exhaust manifold in fluid communication with the exhaust ports, wherein each of the direct fuel injectors is closer to the intake manifold than to the exhaust manifold.

18. The vehicle of claim 17 , wherein each of the port fuel injectors is closer to the exhaust manifold than to the intake manifold.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Hayman Alan W
• Keating Edward J
• Baker Rodney E

Classifications

• F02F1/40

  cylinder heads with means for directing, guiding, or distributing liquid stream · CPC title

• F02M35/10177 Primary

  Engines having multiple fuel injectors or carburettors per cylinder · CPC title

• F02F1/242 Primary

  Arrangement of spark plugs or injectors · CPC title

• F02F1/38

  the cylinder heads being of overhead valve type · CPC title

• F02M55/025

  Common rails · CPC title