公开(公告)号：US20200347754A1

公开(公告)日：2020-11-05

申请号：US16401765

申请日：2019-05-02

Applicant: Caterpillar Inc.

Inventor： David Yu Zhang CHANG ,  David Todd MONTGOMERY ,  Scott FIVELAND ,  Scott F. SHAFER

IPC: F01L1/24 ,  F01L1/04 ,  F02D41/14

Abstract: A gas engine is disclosed. The gas engine may include a combustion cylinder. The combustion cylinder may include an intake with an intake valve. The combustion cylinder may include an exhaust with an exhaust valve. The gas engine may include a gas admission valve assembly coupled to the intake. The gas admission assembly may include a trimmable electro-hydraulically actuatable gas admission valve to control a gas flow into the intake.

公开(公告)号：US20210148323A1

公开(公告)日：2021-05-20

申请号：US16949742

申请日：2020-11-12

Applicant: Caterpillar Inc.

Inventor： David Todd MONTGOMERY ,  Greg HAMPSON

IPC: F02P5/04 ,  F02P5/15

Abstract: A controller for a dedicated exhaust gas recirculation (D-EGR) engine is disclosed. The controller may receive a plurality of cylinder pressure signals, each of which is associated with a respective cylinder in a plurality of cylinders of the D-EGR engine. The plurality of cylinders includes at least one donor cylinder and a set of non-donor cylinders. The controller may receive a crankshaft angle signal associated with a crankshaft of the D-EGR engine. The controller may selectively adjust ignition timing of a cylinder, of the plurality of cylinders, based on the crankshaft angle signal and a cylinder pressure signal, of the plurality of cylinder pressure signals, associated with the cylinder; or a fuel rate of the at least one donor cylinder based on the crankshaft angle signal and a set of cylinder pressure signals, of the plurality of cylinder pressure signals, associated with the set of non-donor cylinders.

公开(公告)号：US20180021703A1

公开(公告)日：2018-01-25

申请号：US15218933

申请日：2016-07-25

Applicant: Caterpillar Inc.

Inventor： Daniel Raymond BALDWIN ,  David Todd MONTGOMERY

IPC: B01D27/08 ,  F01M11/03 ,  F02M37/22 ,  B01D35/00 ,  F16J15/02

CPC classification number: B01D27/08 ,  B01D2201/304 ,  F01M11/03 ,  F02M37/22 ,  F16J15/164

Abstract: A seal arrangement for joining a first component to a second component is disclosed. The seal arrangement may have a first sealing surface formed as an integral portion of the first component, and a second sealing surface formed as an integral portion of the second component and configured to directly engage the first sealing surface. The seal arrangement may also have an energizer engaged with the first sealing surface and configured to inhibit movement of the first sealing surface away from the second sealing surface during a temperature drop.