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公开(公告)号：US20180180005A1
公开(公告)日：2018-06-28
申请号：US15388169
申请日：2016-12-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Davide Di Nunno , Luca Trabucchi
CPC classification number: F02M59/027 , F02M59/102 , F04B1/0408 , F04B1/0426 , F04B1/0439 , F04B1/053 , F04B9/042 , F04B17/05 , F04B19/22 , F04B53/144 , F04B53/16
Abstract: A pump assembly and a propulsion system that utilizes the pump assembly includes a casing defining an opening. The pump assembly also includes a first member at least partially disposed in the opening. The first member is movable linearly relative to the opening. The pump assembly further includes a biasing member disposed in the opening. The biasing member is movable independently of the first member. The first member is movable in a first direction that applies a load to the biasing member which creates a torque on the biasing member. The pump assembly also includes a second member that separates the first member and the biasing member such that the torque on the biasing member is transferred to the second member without transferring the torque to the first member when the first member applies the load to the biasing member.
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公开(公告)号：US10113479B2
公开(公告)日：2018-10-30
申请号：US15235773
申请日：2016-08-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alessio Courtial , Luca Trabucchi , Andrea Coltella
IPC: F02B77/08
Abstract: A valve motion measurement assembly is provided for a cylinder valve of an internal combustion engine provided with a valve stem and with a valve head. The valve motion measurement assembly includes a valve position sensor, a supporting bracket provided with at least one sensor seat for the valve position sensor, and a sensor target element configured to be coupled to the valve stem at a distance from the valve head to follow the motion of the cylinder valve. The valve position sensor interacts with the sensor target element for determining the position of the cylinder valve.
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公开(公告)号：US10006424B1
公开(公告)日：2018-06-26
申请号：US15388169
申请日：2016-12-22
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Davide Di Nunno , Luca Trabucchi
Abstract: A pump assembly and a propulsion system that utilizes the pump assembly includes a casing defining an opening. The pump assembly also includes a first member at least partially disposed in the opening. The first member is movable linearly relative to the opening. The pump assembly further includes a biasing member disposed in the opening. The biasing member is movable independently of the first member. The first member is movable in a first direction that applies a load to the biasing member which creates a torque on the biasing member. The pump assembly also includes a second member that separates the first member and the biasing member such that the torque on the biasing member is transferred to the second member without transferring the torque to the first member when the first member applies the load to the biasing member.
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公开(公告)号：US10024200B2
公开(公告)日：2018-07-17
申请号：US15295430
申请日：2016-10-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Davide Di Nunno , Mirco De Marco , Luca Trabucchi , Pierfrancesco De Giovanni
Abstract: A roller tappet for a fuel unit pump of an internal combustion engine is provided with a roller tappet bore for inserting the roller tappet within the internal combustion engine. The roller tappet includes a roller tappet body having a body longitudinal axis for connecting the roller tappet to a reciprocating element of the fuel unit pump. A cam roller contacts a cam lobe of a rotatable shaft of the internal combustion engine. The cam roller is rotatably mounted to the roller tappet body around a cam roller rotation axis. The external surface of the roller tappet body is configured to allow tilting of the roller tappet within the roller tappet bore for aligning the roller tappet with respect to the cam lobe of the rotatable shaft.
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