公开(公告)号：US5261271A

公开(公告)日：1993-11-16

申请号：US826524

申请日：1992-01-27

Applicant: Robert F. Bihn ,  Freeman C. Gates, Jr.

Inventor： Robert F. Bihn ,  Freeman C. Gates, Jr.

IPC: G01M15/10 ,  G01M15/00

CPC classification number: G01M15/106

Abstract: An exhaust backpressure tester is provided for determining exhaust backpressure in an exhaust system of an internal combustion engine of a motor vehicle. The tester includes a pressure sensor associated with the exhaust system for sensing pressure therein and generating a first signal representative thereof. A comparator is also provided and is connected to the pressure sensor for receiving the first signal, generating a second signal having a value which is representative of substantially zero backpressure in the exhaust system, processing the first signal to compensate it relative to the second signal, and comparing the processed first signal to the second signal to generate a pressure signal which is indicative of the exhaust backpressure in the exhaust system.

Abstract translation: 提供了用于确定机动车辆的内燃机的排气系统中的排气背压的排气背压测试器。 测试器包括与排气系统相关联的压力传感器，用于感测其中的压力并产生代表其的第一信号。 还提供一个比较器，并连接到压力传感器，用于接收第一信号，产生具有代表排气系统中基本为零背压的值的第二信号，处理第一信号以相对于第二信号进行补偿， 以及将经处理的第一信号与第二信号进行比较以产生指示排气系统中排气背压的压力信号。

公开(公告)号：US4401093A

公开(公告)日：1983-08-30

申请号：US386565

申请日：1982-06-09

Applicant: Freeman C. Gates, Jr. ,  Egils A. Purins

Inventor： Freeman C. Gates, Jr. ,  Egils A. Purins

IPC: F01M11/04 ,  F01M13/04 ,  F01M13/00

CPC classification number: F01M13/0405 ,  F01M11/04 ,  F01M2011/0491 ,  Y10S55/19

Abstract: A one-piece combination oil fill/air breather cap for an automotive type engine positive crankcase ventilation (PCV) system that includes a filter and oil separator chambers below the filter defined by partitions or baffles upon which the oil droplets impinge during reverse flow operation of the PCV system; a double lip flared annular seal operating in tension being sandwiched between the cap lower surface and the engine rocker arm cover to minimize oil leakage.

Abstract translation: 一种用于汽车发动机正曲轴箱通风（PCV）系统的单件式组合充油/空气通气帽，其包括由过滤器和油分离器室在过滤器下方限定的隔板或挡板，油滴在反向流动操作期间撞击 PCV系统; 在张力下操作的双唇喇叭形环形密封件被夹在盖下表面和发动机摇臂盖之间以最小化漏油。

公开(公告)号：US5369989A

公开(公告)日：1994-12-06

申请号：US88163

申请日：1993-07-07

Applicant: Freeman C. Gates, Jr. ,  Kyong M. Park ,  Niraj Gupta

Inventor： Freeman C. Gates, Jr. ,  Kyong M. Park ,  Niraj Gupta

IPC: G01M15/09 ,  G01M15/10 ,  G01M15/00

CPC classification number: G01M15/106 ,  G01M15/09

Abstract: A simple, reliable, compact and inexpensive automobile engine misfiring detection system includes a basic capacitive pressure transducer, attached to a bleeder pipeline equidistantly from each point where the exhaust manifold is attached to the engine, and made of two closely spaced insulating plates whose opposed faces contain conductive layers, and one of which plates is a flexible diaphragm of low mechanical hysteresis. The transducer is thus coupled to a variable exhaust gas pressure source which under normal operating conditions remains at a substantially constant pressure level. The output signal from the transducer has its high-frequency AC component attenuated by a low-pass filter, whose output in turn has its DC component substantially removed by capacitive blocking, after which the remaining AC output is then amplified by a circuit including an operational amplifier. This AC-amplified signal is then compared with a "reduced-magnitude average" reference signal (produced by an AC-to-DC conversion side-circuit followed by magnitude-level adjustment). The comparator output triggers a one-shot monostable multivibrator used to produce an on-off switching signal which operates an LED alarm signal notifying the driver of engine misfiring and also sends an electronic signal to the car's central processor.

Abstract translation: 一种简单，可靠，紧凑且廉价的汽车发动机失火检测系统，包括一个基本的电容式压力传感器，其连接到排气歧管连接到发动机的每个点等距离的泄放管道，并且由两个紧密隔开的绝缘板制成， 包含导电层，其中一个板是低机械滞后的柔性隔膜。 因此，换能器耦合到可变排气压力源，其在正常操作条件下保持在基本恒定的压力水平。 来自换能器的输出信号具有由低通滤波器衰减的高频AC分量，该低通滤波器的输出又通过电容性阻塞基本上除去其直流分量，之后剩余的交流输出由包含操作的电路放大 放大器 然后将该AC放大信号与“减小幅度平均”参考信号（由AC到DC转换侧电路产生，然后进行幅度电平调整）进行比较。 比较器输出触发单稳态多谐振荡器，用于产生开关开关信号，该开关信号操作LED告警信号，通知驾驶员发动机失火，并将电子信号发送到汽车的中央处理器。

公开(公告)号：US5241940A

公开(公告)日：1993-09-07

申请号：US1594

申请日：1993-01-07

Applicant: Freeman C. Gates, Jr.

Inventor： Freeman C. Gates, Jr.

IPC: F02M25/07

CPC classification number: F02M26/57 ,  F02M26/35 ,  F02M26/48 ,  F02M26/47

Abstract: An automotive exhaust gas recirculating (EGR) system contains a pressure sensor responsive to the changes in exhaust manifold gas pressure to control the movement of an EGR valve. A water vapor/ice condenser is installed in the exhaust gas signal line to the pressure sensor so that any water vapor/ice present in the exhaust gas will be condensed/precipitated out and not cause a malfunction of the pressure sensor and an erroneous output signal.

Abstract translation: 汽车排气再循环（EGR）系统包含响应于排气歧管气体压力变化的压力传感器，以控制EGR阀的运动。 在排气信号线上安装有水蒸气/冰冷凝器，压力传感器使得排气中存在的任何水蒸汽/冰会凝结/沉淀出来，不会导致压力传感器的故障和错误的输出信号 。