US 12,352,264 B2
Air compressor cylinder liner
John Howard Tubb, Bedfordale (AU); Gavin Warran Dickson, Kallaroo (AU); and Mario Charles Muscat, Ballajura (AU)
Assigned to ORBITAL AUSTRALIA PTY LTD, Balcatta (AU)
Appl. No. 18/567,489
Filed by Orbital Australia Pty Ltd, Balcatta (AU)
PCT Filed Jun. 29, 2022, PCT No. PCT/AU2022/050671
§ 371(c)(1), (2) Date Dec. 6, 2023,
PCT Pub. No. WO2023/272351, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 2021901987 (AU), filed on Jun. 30, 2021.
Prior Publication US 2024/0271616 A1, Aug. 15, 2024
Int. Cl. F02B 33/20 (2006.01); F01M 13/02 (2006.01); F02M 69/08 (2006.01); F04B 39/12 (2006.01); F04B 53/16 (2006.01)
CPC F04B 53/166 (2013.01) [F01M 13/028 (2013.01); F02M 69/08 (2013.01); F04B 39/126 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A cylinder liner for providing reduced oil carry-over in an air-assisted fuel injection system comprising an air compression piston, wherein the cylinder liner and the air compression piston together in part define an air compression chamber, the cylinder liner comprising:
an outer surface; and
a high resistance air flow path configured to increase the time that oil-laden air drawn up from an oil reservoir around the outer surface of the cylinder liner and into the air compression chamber is in contact with the outer surface of the liner such that oil is stripped out of the oil-laden air to adhere to the outer surface and minimize the amount of oil carry-over entering the air compression chamber.