Internal charge air feed from rocker cover integrated intake runners

Patent metadata

Field	Value
Publication number	US-2016356190-A1
Application number	US-201514730787-A
Country	US
Kind code	A1
Filing date	Jun 4, 2015
Priority date	Jun 4, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A high pressure charge air feed arrangement for an internal combustion engine is provided. The arrangement includes an intake having a high pressure output, a rocker cover having an intake runner defining a high pressure charge flow path, and a gas and oil separator having a flow accelerator with input and output sides. The high pressure output of the intake is attached to one end of the path and the accelerator is attached to the other end. The path is connected between the input and output sides of the accelerator. The separator includes upper and lower plenums divided by a wall having an oil and gas diffuser. The input side is connected to the lower plenum and the output side is connected to a crankcase oil return line. The flow accelerator may be any type of fluid accelerator, including but not limited to a venturi pump and a jet pump.

First claim

What is claimed is:

1 . A high pressure charge air feed arrangement for an internal combustion engine comprising:
a rocker cover having a high pressure charge flow path; an intake fluidly connected to said path for introducing high pressure air into said path; a gas and oil separator having a flow accelerator, said accelerator having and oil input side and an oil output side, said path being fluidly attached to said accelerator.

2 . The high pressure charge air feed arrangement of claim 1 , wherein said path is connected between said oil input side and said oil output side of said accelerator.

3 . The high pressure charge air feed arrangement of claim 1 wherein said output side is a high velocity side.

4 . The high pressure charge air feed arrangement of claim 2 wherein said gas and oil separator includes an upper plenum and a lower plenum.

5 . The high pressure charge air feed arrangement of claim 4 wherein said upper and lower plenum are divided by a wall, said gas and oil separator further including an oil and gas diffuser provided therein.

6 . The high pressure charge air feed arrangement of claim 4 wherein said oil input side of said accelerator is fluidly associated with said lower plenum.

7 . The high pressure charge air feed arrangement of claim 1 wherein said oil output side is fluidly associated with a crankcase oil return line.

8 . The high pressure charge air feed arrangement of claim 1 wherein said flow accelerator is a venturi pump.

9 . The high pressure charge air feed arrangement of claim 1 wherein said flow accelerator is a jet pump.

10 . The high pressure charge air feed arrangement of claim 1 wherein said high pressure charge flow path of said rocker cover is an intake runner.

11 . An engine system comprising:
an intake having a high pressure output; a rocker cover fluidly associated with said high pressure output of said intake, said cover having an intake runner; a gas and oil separator fluidly including an oil flow accelerator, said accelerator having a high pressure gas input, said intake runner being fluidly associated with said high pressure gas input.

12 . The engine system of claim 11 , wherein said gas and oil separator includes an upper plenum and a lower plenum.

13 . The engine system claim 12 wherein said upper and lower plenum are divided by a wall, said gas and oil separator further including an oil and gas diffuser provided therein.

14 . The engine system of claim 11 wherein said flow accelerator is a venturi pump.

15 . The engine system of claim 11 wherein said flow accelerator is a jet pump.

16 . A system for separating crankcase oil and gases in an internal combustion engine comprising:
a rocker cover having an intake runner, said intake runner having an input end and an output end; an air intake fluidly connected to said input end of said intake runner; and a gas and oil separator fluidly connected to said output end of said intake runner.

17 . The system for separating crankcase oil and gases of claim 16 , wherein said gas and oil separator includes an upper plenum and a lower plenum.

18 . The system for separating crankcase oil and gases of claim 17 wherein said upper and lower plenum are divided by a wall, said gas and oil separator further including an oil and gas diffuser provided therein.

19 . The system for separating crankcase oil and gases of claim 11 wherein said flow accelerator is a venturi pump.

20 . The system for separating crankcase oil and gases of claim 11 wherein said flow accelerator is a jet pump.

Assignees

• Ford Global Tech Llc

Inventors

• Dwivedi Rishi
• Newman Christopher William
• Ford Roy Allen

Classifications

• F01M2013/0488

  with oil trap in the return conduit to the crankcase · CPC title

• F01M2013/0438

  with a filter · CPC title

• F16N2013/006

  Jet pumps · CPC title

• F01M13/04 Primary

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title

• F01M13/0416 Primary

  arranged in valve-covers · CPC title