公开(公告)号：US20230184189A1

公开(公告)日：2023-06-15

申请号：US17549288

申请日：2021-12-13

Applicant: Caterpillar Inc.

Inventor： Andrew O. Marrack ,  Daniel Reese Puckett ,  Mitchell B. Juchems

IPC: F02D41/20

CPC classification number: F02D41/20 ,  F02D2041/2034 ,  F02D2041/2051 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/101

Abstract: Operating an engine system and fuel system includes energizing a solenoid actuator for a spill valve in a fuel injector in a first engine cycle via a standard waveform to inject a shot of fuel. Operating an engine system and fuel system further includes determining suitability for reduced energy operating of the fuel system, and energizing the solenoid actuator via a reduced energy waveform based on the determining suitability so as to inject one or more shots of fuel in a second engine cycle. The operating methodology and control logic can extend an engine speed range for multi-shot fuel injection in an engine.

公开(公告)号：US09394848B2

公开(公告)日：2016-07-19

申请号：US14153485

申请日：2014-01-13

Applicant: Caterpillar Inc.

Inventor： Daniel Reese Puckett ,  Bryan Moore ,  Michael Edward Sattler ,  Prasanna Mohan Ballal ,  Bradley Scott Bashore ,  Kranti Kumar Nellutla

IPC: F02B15/00 ,  F02D41/38 ,  F02M51/06 ,  F02D41/20 ,  F02M63/00 ,  F02M47/02

CPC classification number: F02M47/027 ,  F02D41/20 ,  F02D41/3082 ,  F02D41/3836 ,  F02D2041/2044 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02M51/0625 ,  F02M63/0022 ,  F02M63/0075

Abstract: Fuel is injected by energizing a solenoid of a fuel injector for an on-time that terminates at a first end-of-current timing. An end-of-current trim is determined at least in part by estimating a duration between an induced current event in a circuit of the solenoid and a valve/armature interaction event. An induced current event occurs when an armature abruptly stops, and a valve/armature interaction event occurs when the armature couples with or de-couples from the valve member. Fuel is injected in a subsequent injection event by adjusting the end-of-current timing by the end-of-current trim.

Abstract translation: 通过为燃料喷射器的螺线管通电导通时间来燃料燃料，该导通时间终止于第一个电流结束定时。 至少部分地通过估计螺线管的电路中的感应电流事件与阀/电枢相互作用事件之间的持续时间来确定电流终止。 当电枢突然停止时发生感应电流事件，并且当电枢与阀构件耦合或解耦时，发生阀/电枢相互作用事件。 通过将电流终止时间调整为电流截止电流，在后续的注入事件中注入燃料。

公开(公告)号：US09228574B2

公开(公告)日：2016-01-05

申请号：US13778280

申请日：2013-02-27

Applicant: CATERPILLAR INC.

Inventor： Daniel Reese Puckett

IPC: F04B9/10 ,  F04B9/103 ,  F04B15/08

CPC classification number: F04B9/10 ,  F04B9/103 ,  F04B15/08

Abstract: A cryogenic hydraulic reciprocating piston pump includes a casing which defines a piston chamber. The sidewall of the piston chamber includes a retraction spill port as well as a pumping spill port. At the end of a retraction stroke, a retraction spill passageway that extends through the piston becomes aligned with the retraction spill port and fluid is communicated from the pressurized side of the piston to the unpressurized side of the piston to stop the retraction stroke before the piston “bottoms out”. Similarly, at the end of a pumping stroke, a pumping spill passageway that extends through the piston becomes aligned with the pumping spill port which provides communication between the pressurized side of the piston and the unpressurized side of the piston thereby stopping movement of the piston before it “bottoms out”.

Abstract translation: 低温液压往复活塞泵包括限定活塞室的壳体。 活塞室的侧壁包括回缩溢出口以及泵送溢出口。 在回缩行程结束时，延伸穿过活塞的回缩溢流通道与回缩溢出口对准，并且流体从活塞的加压侧连通到活塞的非加压侧，以在活塞之前停止回缩行程 “底部出”。 类似地，在泵送冲程结束时，延伸穿过活塞的泵送溢流通道与泵送溢流口对准，该泵送溢流口提供活塞的加压侧与活塞的非加压侧之间的连通，从而阻止活塞的运动 它“底”了。

公开(公告)号：US09091240B2

公开(公告)日：2015-07-28

申请号：US13749011

申请日：2013-01-24

Applicant: Caterpillar Inc.

Inventor： Steven Thomas Grant ,  Frank Lombardi ,  Daniel Reese Puckett ,  Cory A. Brown ,  Joshua Wayne Steffen ,  Paul Joseph Desiderio

IPC: F02G5/00 ,  F02M69/00 ,  F02M21/02 ,  F02D19/02

CPC classification number: F02M69/00 ,  F02D19/02 ,  F02M21/02 ,  F02M21/0218 ,  F02M21/023 ,  F02M21/0236 ,  F02M21/0239 ,  Y02T10/32

Abstract: A system, related method and computer program product are disclosed for controlling fuel mass of CNG received by an engine. The system may comprise a heat exchanger configured to receive CLNG and supply coolant and to output CNG and return coolant, an injector configured to inject CNG into the engine, a gas line between the injector and heat exchanger, a control valve configured to receive return coolant from the heat exchanger and to change the amount of return coolant flowing through control valve, and a controller connected to the control valve. The gas line may be configured to carry CNG from the heat exchanger to the injector. The controller may be configured to maintain a Gas Line Temperature within an operating range by adjusting the amount of return coolant flowing through the control valve based, at least in part, on the Gas Line Temperature and a Target Return Coolant Temperature.

Abstract translation: 公开了一种用于控制由发动机接收的CNG的燃料质量的系统，相关方法和计算机程序产品。 该系统可以包括热交换器，其被配置为接收CLNG并供应冷却剂并输出CNG并返回冷却剂;配置成将CNG注入发动机的喷射器，喷射器和热交换器之间的气体管线;配置成接收返回冷却剂的控制阀 并且改变流过控制阀的冷却剂回流量，以及连接到控制阀的控制器。 气体管线可以被配置为将CNG从热交换器运送到喷射器。 控制器可以被配置为通过至少部分地基于气体管线温度和目标返回冷却剂温度调节流过控制阀的回流冷却剂的量来将气体管线温度维持在工作范围内。

公开(公告)号：US20150198110A1

公开(公告)日：2015-07-16

申请号：US14153485

申请日：2014-01-13

Applicant: Caterpillar, Inc.

Inventor： Daniel Reese Puckett ,  Bryan Moore ,  Michael Edward Sattler ,  Prasanna Mohan Ballal ,  Bradley Scott Bashore ,  Kranti Kumar Nellutla

IPC: F02D41/38 ,  F02M51/06

CPC classification number: F02M47/027 ,  F02D41/20 ,  F02D41/3082 ,  F02D41/3836 ,  F02D2041/2044 ,  F02D2041/2051 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02M51/0625 ,  F02M63/0022 ,  F02M63/0075

Abstract: Fuel is injected by energizing a solenoid of a fuel injector for an on-time that terminates at a first end-of-current timing. An end-of-current trim is determined at least in part by estimating a duration between an induced current event in a circuit of the solenoid and a valve/armature interaction event. An induced current event occurs when an armature abruptly stops, and a valve/armature interaction event occurs when the armature couples with or de-couples from the valve member. Fuel is injected in a subsequent injection event by adjusting the end-of-current timing by the end-of-current trim.

Abstract translation: 通过为燃料喷射器的螺线管通电导通时间来燃料燃料，该导通时间终止于第一个电流结束定时。 至少部分地通过估计螺线管的电路中的感应电流事件与阀/电枢相互作用事件之间的持续时间来确定电流终止。 当电枢突然停止时发生感应电流事件，并且当电枢与阀构件耦合或解耦时，发生阀/电枢相互作用事件。 通过将电流终止时间调整为电流截止电流，在后续的注入事件中注入燃料。