公开(公告)号：US4708094A

公开(公告)日：1987-11-24

申请号：US941658

申请日：1986-12-15

Applicant: Melvin J. Helmich ,  William P. Ryan ,  David H. Marvin

Inventor： Melvin J. Helmich ,  William P. Ryan ,  David H. Marvin

IPC: F02B3/00 ,  F02D19/10

CPC classification number: F02D19/10 ,  F02D19/0605 ,  F02D19/061 ,  F02B3/00 ,  F02D29/06 ,  Y02T10/36

Abstract: Disclosed herein is an apparatus which is adapted for controlling fuel flows for dual fuel compression ignition engines. The disclosed system includes a lag fuel governing system in conjunction with a lead fuel governing system which includes spontaneous motion metering means. The lag fuel governing system includes means for providing a first signal indicative of the position of the lead fuel metering means, which signal approximates total load on the engine; means for providing a second signal representative of a selected percentage of lead fuel relative to total load; means for controlling flow of said lag fuel to said engine, which flow causes movement of said lead fuel metering means; means for determining the difference between said first signal and said second signal, which difference is indicative of distance the lead fuel metering means must be moved to attain the selected percentage of lead fuel relative to total load; and means for causing operation of said means for controlling flow of said lag fuel to said engine to cause movement of said lead fuel metering means equal to the distance the lead fuel rack must be moved to attain the select percentage of lead fuel relative to total load.

Abstract translation: 这里公开了一种适于控制双燃料压缩点火发动机的燃料流的装置。 所公开的系统包括与包括自发运动计量装置的铅燃料调节系统相结合的滞后燃料调节系统。 滞后燃料调节系统包括用于提供指示铅燃料计量装置的位置的第一信号的装置，该信号近似于发动机上的总负载; 用于提供表示相对于总负载的铅燃料的选定百分比的第二信号的装置; 用于控制所述滞后燃料流向所述发动机的装置，该流动导致所述铅燃料计量装置的运动; 用于确定所述第一信号和所述第二信号之间的差异的装置，所述差异指示所述铅燃料计量装置必须移动以获得相对于总负载的所选择的铅燃料百分比的距离; 以及用于使所述用于控制所述滞后燃料流向所述发动机的装置的操作的装置，以使所述铅燃料计量装置的移动等于所述铅燃料架必须移动的距离，以获得铅燃料相对于总负载的选择百分比 。

公开(公告)号：US4306526A

公开(公告)日：1981-12-22

申请号：US910581

申请日：1978-05-30

Applicant: Fred S. Schaub ,  Melvin J. Helmich ,  Robert L. Hubbard ,  Melvin C. Hoagland

Inventor： Fred S. Schaub ,  Melvin J. Helmich ,  Robert L. Hubbard ,  Melvin C. Hoagland

IPC: F02B37/00 ,  F02B19/10 ,  F02B43/00 ,  F02B75/02 ,  F02F1/24 ,  F02B19/00

CPC classification number: F02B43/00 ,  F02B19/108 ,  F02F1/242 ,  F02B2075/025 ,  F02F2007/0063 ,  Y02T10/125 ,  Y02T10/32

Abstract: A method of combusting natural gas fuel in a two cycle, turbocharged internal combustion engine substantially reduces the production of nitrogen-oxygen emissions. An improved turbocharger design provides increased air charging pressure, produces a controlled lean air/fuel mixture and lowers peak combustion temperatures. A jet cell ignition device ensures uniform, reliable ignition of the lean air/fuel mixture under all operating conditions and the lean air/fuel mixture in turn encourages complete fuel combustion and provides excellent combustion characteristics with methane, ethane and heavier paraffinic hydrocarbon fuels. These structural modifications and adjustment of other operating parameters combine to reduce nitric oxide (NO) and nitrogen dioxide (NO.sub.2) emissions by as much as 75% while effecting only a negligible increase in fuel consumption.

Abstract translation: 在二循环涡轮增压内燃机中燃烧天然气燃料的方法大大减少了氮氧排放的产生。 改进的涡轮增压器设计提供增加的空气充气压力，产生受控的稀薄空气/燃料混合物并降低峰值燃烧温度。 喷射式电池点火装置确保在所有操作条件下均匀，可靠地点燃稀薄空气/燃料混合物，并且稀薄空气/燃料混合物反过来鼓励完全的燃料燃烧并且与甲烷，乙烷和较重的链烷烃燃料具有优异的燃烧特性。 这些结构修改和其他操作参数的调整相结合，将一氧化氮（NO）和二氧化氮（NO2）排放量减少了多达75％，同时仅仅减少了燃料消耗的增加。

公开(公告)号：US5488827A

公开(公告)日：1996-02-06

申请号：US326596

申请日：1994-10-20

Applicant: Melvin J. Helmich ,  Richard C. Peoples ,  Vaughn A. Squires

Inventor： Melvin J. Helmich ,  Richard C. Peoples ,  Vaughn A. Squires

IPC: F02B37/007 ,  F02B37/02 ,  F02B37/16 ,  F02B67/10 ,  F02B37/00

CPC classification number: F02B67/10 ,  F02B37/007 ,  F02B37/02 ,  F02B37/16 ,  Y02T10/144

Abstract: An apparatus and method for establishing parallel flow to and from a plurality of turbochargers operating in parallel. The turbochargers are mounted on a manifold that has a high pressure chamber and a low pressure chamber. A plurality of turbines are mounted to the manifold so that each turbine inlet is in communication with the high pressure chamber and each turbine outlet is in communication with the low pressure chamber. Each turbine inlet is sized, shaped and positioned to accommodate a designed proportional mass flow rate to each corresponding turbine. A programmed logic controller and suitable control valve can be used to bypass a portion of the engine exhaust gas from the high pressure chamber directly to the low pressure chamber. The amount of bypassed engine exhaust gas can be controlled to vary the power output of turbines.

Abstract translation: 一种与并联运行的多个涡轮增压器并联的装置和方法。 涡轮增压器安装在具有高压室和低压室的歧管上。 多个涡轮安装到歧管，使得每个涡轮机入口与高压室连通，并且每个涡轮机出口与低压室连通​​。 每个涡轮入口的尺寸，形状和位置都适合于设计的比例质量流量到每个相应的涡轮机。 可以使用编程的逻辑控制器和合适的控制阀来将发动机废气的一部分从高压室直接旁通到低压室。 可以控制旁路发动机废气的量来改变涡轮机的功率输出。

公开(公告)号：US4955326A

公开(公告)日：1990-09-11

申请号：US336789

申请日：1989-04-12

Applicant: Melvin J. Helmich

Inventor： Melvin J. Helmich

IPC: F02B3/06 ,  F02B7/06 ,  F02D19/10

CPC classification number: F02D19/10 ,  F02B7/06 ,  F02D19/0684 ,  F02D19/0689 ,  F02B2201/064 ,  F02B3/06 ,  Y02T10/12 ,  Y02T10/36

Abstract: A dual fuel engine system and method of operating the engine reduces emission rates of polutants. The dual fuel engine includes a fuel oil supply connected to the engine and a fuel gas supply connected to the engine. Means connected between the fuel oil supply and the engine inject low levels of diesel fuel into the engine. In particular, the injection of diesel fuel is limited to pilot injection quantities only. The exhaust emission of NOx is maintained at less than 1 GM/HP-HR, where natural gas is used as the primary fuel, and less than 0.5 GM/HP-HR where digester gas is used as the primary fuel.

Abstract translation: 双燃料发动机系统和操作发动机的方法降低了反应物的排放速率。 双燃料发动机包括连接到发动机的燃料油供应和连接到发动机的燃料气体供应。 连接在燃料油供应和发动机之间的装置将低水平的柴油燃料喷射到发动机中。 特别地，柴油燃料的注入仅限于引燃喷射量。 NOx的废气排放量保持在小于1 GM / HP-HR，其中使用天然气作为主要燃料，以及小于0.5 GM / HP-HR，其中使用蒸煮器气体作为主要燃料。