Internal combustion engine with oil warming with directed spray in cylinder head

Patent metadata

Field	Value
Publication number	US-10415442-B2
Application number	US-201715688687-A
Country	US
Kind code	B2
Filing date	Aug 28, 2017
Priority date	Aug 28, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An internal combustion engine includes an engine block including a plurality of cylinders. A cylinder head is mounted to the engine block and includes intake and exhaust passages in communication with the plurality of cylinders. A cylinder head cover is mounted to the cylinder head and defines a cavity between the cylinder head and the cylinder head cover. An oil passage is disposed in the cavity and includes at least one oil jet for spraying oil at a surface of the cylinder head that is heated by the exhaust passages.

First claim

What is claimed is:

1. An internal combustion engine, comprising:
an engine block including a plurality of cylinders;
a cylinder head mounted to the engine block, the cylinder head including intake and exhaust passages in communication with the plurality of cylinders;
a cylinder head cover mounted to the cylinder head and defining a cavity between the cylinder head and the cylinder head cover; and
an oil passage disposed in the cavity and including at least one oil jet for spraying oil at a surface of the cylinder head that is heated by the exhaust passages during engine operation, wherein the oil passage includes a thermostat valve for allowing the flow of oil in the oil passage and from the at least one oil jet when a temperature of the oil is below a predetermined temperature and prevents the flow of oil therein when a temperature of the oil is above the predetermined temperature.

2. The internal combustion engine according to claim 1 , wherein the cylinder head includes coolant passages disposed within the cylinder head.

3. The internal combustion engine according to claim 1 , wherein the oil passage includes a rail extending along the cylinder head and having a plurality of spaced oil jets directed toward the surface of the cylinder head that is heated by the exhaust passages.

4. The internal combustion engine according to claim 1 , wherein the oil passage includes a rail having a pair of oil jets extending in opposite direction along the cylinder head.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Kaczmar Michael
• Candela Giorgio
• Pryor Bryan K
• Bowler Alan E
• Claywell Mark R

Classifications

• F01M9/101

  of cam surfaces · CPC title

• F01M1/08

  Lubricating systems characterised by the provision therein of lubricant jetting means · CPC title

• F01M2011/022

  for lubricating cylinders · CPC title

• F01M5/021 Primary

  by heating · CPC title

• F01M5/001 Primary

  Heating · CPC title