US 12,247,564 B2
Gas supply pump for ship dual fuel engine
Sang Don Lee, Ulsan (KR); Chang Ha Lee, Ulsan (KR); Tae Hyung Park, Ulsan (KR); Tae Soo Kim, Ulsan (KR); and Young Seok Song, Ulsan (KR)
Assigned to Hyundai Heavy Industries Co., Ltd., Ulsan (KR)
Appl. No. 17/927,431
Filed by Hyundai Heavy Industries Co., Ltd., Ulsan (KR)
PCT Filed May 27, 2021, PCT No. PCT/KR2021/006580
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/246712, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 10-2020-0066828 (KR), filed on Jun. 3, 2020; application No. 10-2020-0184128 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184129 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184130 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184141 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184142 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184360 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184361 (KR), filed on Dec. 28, 2020; application No. 10-2020-0184394 (KR), filed on Dec. 28, 2020; and application No. 10-2020-0188105 (KR), filed on Dec. 30, 2020.
Prior Publication US 2023/0220838 A1, Jul. 13, 2023
Int. Cl. F04B 9/04 (2006.01); F02M 21/02 (2006.01); F04B 9/117 (2006.01); F04B 23/10 (2006.01); F04B 53/18 (2006.01); F04B 15/08 (2006.01)
CPC F04B 9/1176 (2013.01) [F02M 21/0245 (2013.01); F04B 9/042 (2013.01); F04B 23/103 (2013.01); F04B 53/18 (2013.01); F04B 2015/081 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A gas supply pump for a ship dual fuel engine, comprising:
a rotatable camshaft, the rotatable camshaft comprising a plurality of cam noses arranged eccentric from a center of the rotatable camshaft at regular intervals along a lengthwise direction of the rotatable camshaft; and
a plurality of liquefied gas compression devices arranged at regular intervals along the lengthwise direction of the rotatable camshaft, wherein each liquefied gas compression device of the plurality of liquefied gas compression devices is configured to compress and discharge liquefied gas, and wherein each liquefied gas compression device of the plurality of liquefied gas compression devices comprises:
a cam roller configured to closely contact a respective cam nose of the plurality of cam noses;
a drive shaft on one side of the cam roller;
a piston adjacent to the drive shaft on the one side of the cam roller;
an integral connection member connected to the cam roller, the integral connection member comprising a receiver; and
a case that houses the cam roller, the drive shaft, piston, and the integral connection member, the case comprising a through hole that is at least partially aligned with the receiver of the integral connection member,
wherein each of the plurality of liquefied gas compression devices is configured such that, when a cutoff bolt or a cutoff pin is inserted through the through hole and connected to the receiver, the cam roller is spaced apart from the cam nose to thereby prevent transmission of a rotational driving force of the cam nose to the piston.