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公开(公告)号：US06516775B2
公开(公告)日：2003-02-11
申请号：US09742730
申请日：2000-12-20
申请人： Sean O. Cornell , Steven J. Funke , Scott A. Leman
发明人： Sean O. Cornell , Steven J. Funke , Scott A. Leman
IPC分类号： F02D1304
CPC分类号： F01L9/02 , F01L13/06 , F01L13/065 , F01L2760/004
摘要： Compression brake systems using “back-fill” between combustion cylinders or requiring an exhaust valve to be opened twice during a braking cycle require brake actuation systems able to maintain control over the exhaust valve during different loading conditions. In a first opening event where a piston is at or near bottom dead center, pressures in the combustion cylinder are low. During a second opening event near top dead center pressures are higher. Movement of the exhaust valve may be slowed during the first opening event by controlling fluid leaving a second actuator volume opposite a first actuator volume providing opening force on an exhaust valve.
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公开(公告)号：US06609495B1
公开(公告)日：2003-08-26
申请号：US09952823
申请日：2001-09-14
申请人： Sean O. Cornell , Scott A. Leman , Steven J. Funke
发明人： Sean O. Cornell , Scott A. Leman , Steven J. Funke
IPC分类号： F02D1304
CPC分类号： F02D13/04
摘要： A method of engine braking includes a initial step of determining whether fuel injector tip temperatures are at or above a pre-determined temperature. If the injector tip temperatures are below the pre-determined temperature, then the electronic control module commands performance of dual event engine braking. If the injector tip temperatures are at or above the pre-determined temperatures, then the electronic control module commands the performance of single event engine braking. Such a strategy can achieve higher overall engine braking horsepower without risking the potential catastrophic dangers associated with injector tip overheating.
摘要翻译： 发动机制动的方法包括确定燃料喷射器尖端温度是否在预定温度以上的初始步骤。 如果喷射器尖端温度低于预定温度，则电子控制模块命令执行双事件发动机制动。 如果喷油嘴的温度在预先确定的温度以上，那么电子控制模块就可以命令执行单事件发动机制动。 这样的策略可以实现更高的整体发动机制动功率，而不会引起与喷射头过热相关的潜在的灾难性危险。
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公开(公告)号：US06553966B2
公开(公告)日：2003-04-29
申请号：US09808226
申请日：2001-03-14
IPC分类号： F02M4700
CPC分类号： F02N99/006 , F01L1/46 , F01L9/02 , F01L9/04 , F01L13/00 , F02D13/0253 , F02D41/3809 , F02D41/401 , F02D2250/31 , F02M57/025 , F02M59/105 , F02N19/004 , Y02T10/18 , Y02T10/44
摘要： In many cases, intake and/or exhaust valves and fuel injector plungers are desirably placed in a predetermined condition prior to starting the engine. In hydraulic systems, leakage and thermal contraction can lead to pressure loss during a period of non-operation, thereby allowing the components to move away from the predetermined condition. Similar concerns arise with the use of residual electromagnetic force, which can decay over time. In the case of intake/exhaust valves, for example, such undesired movement can led to a potential collision between the valves and the engine piston during starting. This invention provides a system and method for presetting the engine and/or the components thereof to the predetermined condition just prior to starting the engine.
摘要翻译： 在许多情况下，在启动发动机之前，期望地将进气和/或排气阀和燃料喷射器柱塞置于预定的状态。 在液压系统中，泄漏和热收缩可能导致在非操作期间的压力损失，从而允许部件移动远离预定条件。 使用残留的电磁力也会产生类似的问题，电磁力随时间而衰减。 在进气/排气阀的情况下，例如，这种不期望的运动可能导致在启动期间阀和发动机活塞之间的潜在碰撞。 本发明提供一种用于在发动机启动之前将发动机和/或其部件预置到预定状态的系统和方法。
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公开(公告)号：US06907851B2
公开(公告)日：2005-06-21
申请号：US10309801
申请日：2002-12-04
申请人： Travis E. Barnes , Judson R. Bruce , Sean O. Cornell , Douglas E. Handly , Scott A. Leman , David M. Milam , Wade J. Robel , Di Wu
发明人： Travis E. Barnes , Judson R. Bruce , Sean O. Cornell , Douglas E. Handly , Scott A. Leman , David M. Milam , Wade J. Robel , Di Wu
CPC分类号： F01L9/02 , F01L1/146 , F01L1/26 , F01L9/023 , F01L13/0015 , F01L13/06 , F01L2001/34446 , F01L2013/0089 , F01L2800/00 , F02B2275/32 , Y02T10/142
摘要： An engine valve actuation system is provided. The engine valve actuation system includes an intake valve that is moveable between a first position to prevent a flow of fluid and a second position to allow a flow of fluid. A cam assembly is configured to move the intake valve between the first position and the second position. A fluid actuator is configured to selectively prevent the intake valve from moving to the first position. A source of fluid is in fluid communication with the fluid actuator. A directional control valve is configured to control a flow of fluid between the source of fluid and the fluid actuator. A check valve is disposed between the directional control valve and the source of fluid, only allowing fluid flow from the fluid source to the directional control valve. A bleed orifice may be disposed between the directional control valve and the source of fluid, in parallel with the check valve.
摘要翻译： 提供发动机气门驱动系统。 发动机气门致动系统包括进气阀，该进气阀可在第一位置之间移动以防止流体流动，而第二位置可允许流体流动。 凸轮组件构造成使进气阀在第一位置和第二位置之间移动。 流体致动器构造成选择性地防止进气阀移动到第一位置。 流体源与流体致动器流体连通。 方向控制阀构造成控制流体源和流体致动器之间的流体流动。 止回阀设置在方向控制阀和流体源之间，仅允许流体从流体源流向方向控制阀。 泄放孔可以设置在方向控制阀和流体源之间，与止回阀平行。
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公开(公告)号：US06722349B2
公开(公告)日：2004-04-20
申请号：US10066822
申请日：2002-02-04
申请人： Scott A. Leman , Sean O. Cornell
发明人： Scott A. Leman , Sean O. Cornell
IPC分类号： F02M2507
CPC分类号： F02D13/0207 , F01L9/02 , F01L13/0015 , F01L2800/10 , F02D13/0261 , F02D13/0269 , F02M26/01 , Y02T10/142
摘要： An engine with an efficient valve actuator is disclosed. The engine employs a first force to hold a valve of the engine open during a normal valve event and a second force to hold the exhaust valve open during an exhaust gas recirculation event. The valve actuator may be operated using pressurized fluid adapted to extend an actuator plunger through a cylinder. The first force may be derived by a mechanically driven actuator, while the second force may be derived from a high pressure rail of the engine. A control valve may be employed to direct either low pressure or high pressure oil to the valve actuator cylinder.
摘要翻译： 公开了一种具有高效阀门致动器的发动机。 发动机采用第一力来在正常的阀门事件期间保持发动机的阀门打开，并且在废气再循环事件期间采用第二力来保持排气阀打开。 可以使用适于将致动器柱塞延伸穿过气缸的加压流体来操作阀致动器。 第一力可以由机械驱动的致动器导出，而第二力可以来自发动机的高压轨。 可以使用控制阀将低压或高压油引导到阀致动器气缸。
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公开(公告)号：US06474620B2
公开(公告)日：2002-11-05
申请号：US09745058
申请日：2000-12-20
IPC分类号： F16K31122
CPC分类号： F01L9/02 , F01L2201/00
摘要： The present invention finds application in hydraulically actuated valves, such as gas exchange valves, having a valve member that moves within a valve body between an open position and a closed position. In valves such as these, the valve member typically includes a valve surface that contacts a valve seat included on the valve body when moving to its closed position. However, the impact velocity when the valve surface contacts the valve seat can be quite high. This can lead to fatigue of the valve stem and can wear out the valve seat, both of which can shorten the effective life of the valve. Therefore, the present invention includes a hydraulic pulse generator for slowing movement of the valve member which includes the direction of a hydraulic pulse toward the valve member as the valve member moves from its open position to its closed position.
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7.发明授权Duration control strategy for a hydraulically actuated engine compression release brake 失效液压发动机压缩释放制动器的持续时间控制策略公开(公告)号：US06418906B1
公开(公告)日：2002-07-16
申请号：US09824173
申请日：2001-04-02
IPC分类号： F02D1304
摘要： A method of engine compression release braking includes an initial step of compressing gas in an engine cylinder. A compression release brake valve is then opened at least in part by fluidly connecting a brake actuator to a source of high pressure actuation fluid. Next, a valve closing timing that results a valve seating velocity that is less than a pre-determined velocity is determined. The compression release brake valve is then closed at the valve closing timing at least in part by fluidly connecting the brake actuator to a low pressure actuation fluid reservoir.
摘要翻译： 发动机压缩释放制动的方法包括在发动机气缸中压缩气体的初始步骤。 至少部分地通过将制动致动器流体地连接到高压致动流体源来打开压缩释放制动阀。 接下来，确定导致阀座速度小于预定速度的阀关闭正时。 压缩释放制动阀然后至少部分地通过将制动致动器流体地连接到低压致动流体储存器而在关闭时刻关闭。
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8.发明授权In-chassis engine compression release brake diagnostic test and electronic control module using the same 有权车载发动机压缩释放制动器诊断测试和电子控制模块使用相同公开(公告)号：US06892569B2
公开(公告)日：2005-05-17
申请号：US10115748
申请日：2002-04-03
CPC分类号： F02D41/0087 , F02B3/06 , F02B2275/14 , F02D13/04 , F02D41/221 , Y02T10/123
摘要： It is becoming more common for diesel engine cylinders to include an engine compression release brake that can utilize energy built up in the cylinder to provide additional braking for the vehicle. The present invention utilizes a software diagnostic test that is stored in an electronic control module to detect defects in the engine compression release brakes. In particular, the present invention operates a first portion of the engine cylinders in a power mode and a second portion of the engine cylinders in a braking mode and compares a resulting fuel injector response or engine response to an expected value to determine if one or more of the engine compression release brakes are performing as expected.
摘要翻译： 柴油发动机气缸包括发动机压缩释放制动器变得越来越普遍，该发动机压缩释放制动器可以利用在气缸中积聚的能量为车辆提供额外的制动。 本发明利用存储在电子控制模块中的软件诊断测试来检测发动机压缩释放制动器中的缺陷。 特别地，本发明以发动机模式和发动机气缸的第二部分在制动模式下操作发动机气缸的第一部分，并将所得到的燃料喷射器响应或发动机响应与预期值进行比较，以确定是否存在一个或多个 的发动机压缩释放制动器按预期执行。
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公开(公告)号：US06354266B1
公开(公告)日：2002-03-12
申请号：US09742716
申请日：2000-12-20
IPC分类号： F02N1702
CPC分类号： F02D41/0087 , F02D13/04 , F02D41/068 , F02D2250/38
摘要： An enhanced warm-up operation mode operates a first portion of engine cylinders in a power mode and a second portion of engine cylinders in a braking mode. More fuel is injected into the powered cylinders in order to maintain engine speed and overcome the retarding force of the engine compression release brakes on the braking cylinders. The engine cycles through which cylinders are powered and which are braking during the warm-up procedure. The process reduces emissions, such as white smoke, that are common during cold start conditions.
摘要翻译： 增强的预热操作模式以制动模式操作处于动力模式的发动机气缸的第一部分和发动机气缸的第二部分。 为了保持发动机转速并克服制动气缸上的发动机压缩释放制动器的阻力，更多的燃料被注入动力缸。 发动机循环通过哪些气缸供电，哪些在预热过程中制动。 该过程减少了冷启动条件下常见的排放，如白烟。
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10.发明授权公开(公告)号：US06560963B2
公开(公告)日：2003-05-13
申请号：US09742556
申请日：2000-12-20
IPC分类号： F02D2300
CPC分类号： F02D41/12 , F02D13/04 , F02D41/0007 , F02D2200/704 , F02D2250/41 , Y02T10/144
摘要： A method of engine compression release braking with avoidance of turbine overspeed is disclosed. Initially, an electronic control module determines whether a turbine overspeed condition is present. If an overspeed condition is present, then the blow down timing of an engine compression release braking event is advanced. The present invention is particularly applicable to preventing turbine overspeed for vehicles operating at higher altitudes while compression braking.
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