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公开(公告)号：US20160017766A1
公开(公告)日：2016-01-21
申请号：US14870004
申请日：2015-09-30
Applicant: Caterpillar Inc.
Inventor： James J. Cress
Abstract: A rocker arm assembly for a valve actuation system of an engine is disclosed. The engine has at least one valve. The rocker assembly includes a rocker arm with a valve retention end, a valve bridge with a rocker engagement portion. The rocker engagement portion sustains an engaged position and a released position relative to the valve retention end. Further, a spring unit is disposed between the valve retention end and the rocker engagement portion. In the engaged position, the valve retention end is in operable abutment with the rocker engagement portion. In the released position, the spring unit is configured to provide a reaction force between the valve retention end and the rocker engagement portion to disconnect the valve bridge from the rocker arm.
Abstract translation: 公开了一种用于发动机的气门致动系统的摇臂组件。 发动机至少有一个阀。 摇臂组件包括具有阀保持端的摇臂，具有摇臂接合部分的阀桥。 摇杆接合部保持接合位置和相对于阀保持端的释放位置。 此外，弹簧单元设置在阀保持端和摇杆接合部之间。 在接合位置，阀保持端与摇臂接合部可操作地邻接。 在释放位置，弹簧单元构造成在阀保持端和摇杆接合部分之间提供反作用力，以将阀桥与摇臂断开。
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公开(公告)号：US10151256B2
公开(公告)日：2018-12-11
申请号：US15829361
申请日：2017-12-01
Applicant: Caterpillar Inc.
Inventor： Karthik Jayasankaran , Arvind Sivasubramanian , Lingqian Yuan , James J. Cress , David J. Lin , Joshua T. Annin
IPC: F02D41/00 , F02B37/10 , F02M35/10 , F02M35/104 , F02D41/26
Abstract: A control system and method to control cold transient response of an engine. The control system can provide compressed air from a compressed air source to a turbocharger to boost speed of a turbine of the turbocharger, based on determined desired operating characteristics associated with upstream or downstream operation of the engine relative to the turbocharger. The control system can receive data corresponding to actual operating characteristics associated with the upstream or downstream operation of the engine relative to the turbocharger, compare the desired operating characteristics with the data corresponding to actual operating characteristics, and control the air assist from the compressed air source based on the comparison.
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公开(公告)号：US20200291915A1
公开(公告)日：2020-09-17
申请号：US16355033
申请日：2019-03-15
Applicant: Caterpillar Inc.
Inventor： James J. Cress
Abstract: An ignition system for an internal combustion engine includes an ignition coil forming a part of a primary circuit and a secondary circuit, a power source to supply power to the ignition coil, and a controller to determine whether the ignition coil is a recognized ignition coil based on a measured risetime and a measured current level in the primary circuit, the measured current level being lower than that required to create a breakdown voltage of the ignition coil.
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Patent Agency Ranking
公开(公告)号：US10145292B1
公开(公告)日：2018-12-04
申请号：US15684973
申请日：2017-08-24
Applicant: Caterpillar Inc.
Inventor： James J. Cress
IPC: F02B19/12
Abstract: A spark plug including a pre-chamber for an engine is provided. The spark plug extends along a spark plug longitudinal axis. The spark plug includes a first cylindrical structure having a wall defining a bore. An electrode is positioned inside the bore such that the electrode is spaced apart from the wall to define at least one electrode spark gap. The spark plug further includes a second cylindrical structure configured to receive the first cylindrical structure. The second cylindrical structure has one or more access apertures configured to facilitate access to the wall of the first cylindrical structure, wherein a plane perpendicular to the spark plug longitudinal axis passes through the electrode spark gap and intersects the one or more access apertures.
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公开(公告)号：US12196168B2
公开(公告)日：2025-01-14
申请号：US18296394
申请日：2023-04-06
Applicant: Caterpillar Inc.
Inventor： James J. Cress , Sean J. Moser , Christopher M. Hoops
Abstract: A sparkplug includes a sparkplug housing, a cathode including at least one electrode prong and being formed predominantly of iridium, and an anode formed at least predominantly of iron or steel. The material compositions of the cathode and anode provide for extended sparkplug service life, especially in high power density applications employing a prechamber sparkplug. Related methodology is also disclosed.
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公开(公告)号：US20240337234A1
公开(公告)日：2024-10-10
申请号：US18296394
申请日：2023-04-06
Applicant: Caterpillar Inc.
Inventor： James J. Cress , Sean J. Moser , Christopher M. Hoops
Abstract: A sparkplug includes a sparkplug housing, a cathode including at least one electrode prong and being formed predominantly of iridium, and an anode formed at least predominantly of iron or steel. The material compositions of the cathode and anode provide for extended sparkplug service life, especially in high power density applications employing a prechamber sparkplug. Related methodology is also disclosed.
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公开(公告)号：US10975830B2
公开(公告)日：2021-04-13
申请号：US16355033
申请日：2019-03-15
Applicant: Caterpillar Inc.
Inventor： James J. Cress
Abstract: An ignition system for an internal combustion engine includes an ignition coil forming a part of a primary circuit and a secondary circuit, a power source to supply power to the ignition coil, and a controller to determine whether the ignition coil is a recognized ignition coil based on a measured risetime and a measured current level in the primary circuit, the measured current level being lower than that required to create a breakdown voltage of the ignition coil.
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公开(公告)号：US20180030905A1
公开(公告)日：2018-02-01
申请号：US15221213
申请日：2016-07-27
Applicant: Caterpillar Inc.
Inventor： James J. Cress
IPC: F02D9/02 , F02M37/00 , F02M35/10 , F02B63/04 , F02M35/104
CPC classification number: F02D9/02 , F02B43/00 , F02B63/04 , F02D2009/0201 , F02M35/10255 , F02M35/104 , F02M37/0023 , Y02T10/32
Abstract: A priming system for an engine system having a throttle valve configured to regulate a flow of air and fuel into an intake manifold of an engine is disclosed. The priming system may include a first sensor configured to generate a first sensor signal indicative of a value of an engine parameter, an auxiliary fuel line configured to direct fuel from a fuel source to a primed cylinder subset of the plurality of cylinders, an auxiliary fuel valve disposed in the auxiliary fuel line, and a controller in communication with the first sensor and the auxiliary fuel valve. The controller may be configured determine the value of the engine parameter from the first sensor signal and cease directing fuel from the auxiliary fuel line to the primed cylinder subset when the engine parameter value is greater than or equal to a threshold engine parameter value.
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