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    • 1. 发明授权
    • Fluid flowmeter
    • 流体流量计
    • US4164144A
    • 1979-08-14
    • US845751
    • 1977-10-26
    • Hermann KaiserRichard A. NellumsJerry A. Olson
    • Hermann KaiserRichard A. NellumsJerry A. Olson
    • G01F1/36G01F1/32G01F1/34G01F1/42G01F1/44
    • G01F1/34G01F1/3236
    • A low pressure drop air flowmeter for an automotive engine is disclosed. The meter includes a main air flow passage, a relatively small venturi tube receiving a portion of the air flow, a pressure port for sensing stagnation pressure in the main passage, a pressure port for sensing static pressure in the throat of the venturi, and a set of stationary swirl vanes disposed adjacent the outlet of the venturi and operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressures without appreciably increasing the pressure drop across the flowmeter. Also disclosed is a solenoid valve having a single valving member operative in one position to communicate the stagnation pressure to an absolute pressure transducer and operative in another position to communicate the static pressure to the transducer.
    • 公开了一种用于汽车发动机的低压降空气流量计。 仪表包括主空气流通道,容纳空气流的一部分的相对较小的文丘里管,用于感测主通道中的停滞压力的压力端口,用于感测文丘里管喉部静压的压力端口,以及 一组固定涡流叶片设置在文丘里管的出口附近并且可操作地向主通道中的空气的其余部分施加涡流,从而在文氏管出口处产生减小的压力,用于放大停滞和静压之间的压差,而没有 明显增加流量计上的压降。 还公开了一种电磁阀,其具有在一个位置中操作的单个阀构件,以将停滞压力传递到绝对压力换能器并且在另一位置操作以将静压传递到换能器。
    • 2. 发明授权
    • Hot film/swirl fluid flowmeter
    • 热膜/旋流流量计
    • US4449401A
    • 1984-05-22
    • US265119
    • 1981-05-19
    • Hermann KaiserJerry A. Olson
    • Hermann KaiserJerry A. Olson
    • G01F1/684G01F5/00G01F15/02G01F1/68
    • G01F1/6842G01F1/684G01F15/022G01F5/00
    • A low pressure drop hot film/swirl air flowmeter (10) for an automotive engine is disclosed. The flowmeter includes a main air flow passage (18), a relatively small venturi (20) disposed within the passage for receiving a portion of the air flow, a constant temperature thermal anemometer (48) positioned to sense the air flowing in the throat (44) of the venturi, and a set of swirl vanes (22) operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for forced aspiration therethrough without appreciably increasing the pressure drop across the flowmeter. The anemometer includes a bridge circuit (114), one leg of which comprises a resistive sensor (70) within the throat of the venturi. In the preferred embodiment of the invention, an ambient air temperature sensor (72) is included as another of the legs of the bridge to provide temperature compensation for the flowmeter. The anemometer generates an output signal representative of total mass air flow through the flowmeter.
    • 公开了一种用于汽车发动机的低压降热膜/涡流空气流量计(10)。 流量计包括主空气流通道(18),设置在通道内的相对较小的文氏管(20),用于接收一部分空气流;恒温热风速计(48),定位成感测在喉部流动的空气 44)和一组涡流叶片(22),其可操作地向主通道中的空气的其余部分施加漩涡,从而在文丘里管出口处产生减压以强制抽吸,而不会明显增加压降 横跨流量计。 风速计包括桥接电路(114),其一条腿包括位于文丘里管喉部内的电阻式传感器(70)。 在本发明的优选实施例中,环境空气温度传感器(72)被包括作为桥的另一个腿以提供流量计的温度补偿。 风速计产生表示通过流量计的总质量空气流量的输出信号。
    • 3. 发明授权
    • Fluid flowmeter
    • 流体流量计
    • US4282751A
    • 1981-08-11
    • US70593
    • 1979-08-29
    • James M. BrownHermann KaiserJerry A. Olson
    • James M. BrownHermann KaiserJerry A. Olson
    • F02D35/00G01F1/38G01F1/44G01F5/00
    • G01F1/383G01F1/44G01F5/00
    • A low pressure drop air flowmeter (10) for an automobile engine is disclosed. The meter contains a main air flow passage (24), a relatively small venturi (20) to receive a portion of the air flow, pressure ports (98a and 120) for sensing stagnation and static pressure and a set of swirl vanes (22) disposed adjacent the outlet of the venturi and operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressure without appreciably increasing the pressure drop across the flowmeter. A tertiary passage (28) provides a path of fluid communication between points upstream and downstream of the swirl vanes. This passage includes a flow restricting throat (29) which is manually calibrated during or after assembly. Air exiting the tertiary passage impinges upon the swirl to modulate the vortex velocities. This arrangement results in a fluid flowmeter having a characteristic pressure drop which is less than that of a conventional device, particularly at high flow rates. Also disclosed is a solenoid valve (48) operative in the auto-referencing mode to selectively sample stagnation pressure in the tertiary passage or alternatively upstream of the venturi inlet and signal pressure in the throat of the venturi and generate an electrical output signal as a function of the diffrence between these two pressure signals.
    • 公开了一种用于汽车发动机的低压降空气流量计(10)。 仪表包含一个主空气流通道(24),一个相对较小的文丘里管(20),用于容纳一部分空气流,用于感测停滞和静压的压力端口(98a和120)和一组涡流叶片(22) 设置在文丘里管的出口附近并且可操作地向主通道中的空气的其余部分施加漩涡,从而在文氏管出口处产生减小的压力,用于放大停滞和静压之间的压力差,而不会明显地增加压降 横跨流量计。 第三通道(28)提供在涡旋叶片上游和下游的点之间的流体连通路径。 该通道包括流动限制喉部(29),其在组装期间或组装之后被手动校准。 离开第三通道的空气冲击涡流以调制涡流速度。 这种布置导致流体流量计具有比常规装置小的特征压降,特别是在高流量下。 还公开了一种以自动参考模式操作的电磁阀(48),以选择性地采集第三通道中的停滞压力,或者替代文丘里管入口的上游和文丘里管喉部的信号压力,并产生电输出信号作为功能 这两个压力信号之间的差异。
    • 4. 发明授权
    • Snowmobile front suspension
    • 雪车前悬挂
    • US06343666B1
    • 2002-02-05
    • US08947983
    • 1997-10-09
    • Jerry A. OlsonRichard H. Bates, Jr.
    • Jerry A. OlsonRichard H. Bates, Jr.
    • B62M2702
    • B62M27/02B62M2027/026
    • A front snowmobile suspension of the type having a ski carried at the front end of a trailing arm. The front end of the trailing arm is pivotably secured to the chassis by a pair of generally transversely mounted radius rods. The rear end of the trailing arm is pivotably secured to the chassis at a position sufficiently closer to the chassis centerline than the front end of the trailing arm that the trailing arm is oriented at an angle of at least about 8°, and preferably at least about 10°, with respect to the chassis centerline. In this location the rear end of the trailing arm may be positioned inboard of at least a portion of a body panel (typically the side panel)—i.e. the rear end of the trailing arm is disposed between the body panel and the centerline of the chassis.
    • 具有在拖臂的前端承载的滑雪板的类型的前雪地车悬架。 牵引臂的前端通过一对大致横向安装的半径杆可枢转地固定到底盘。 牵引臂的后端可枢转地固定到底盘上,该位置比牵引臂的前端足够靠近机架中心线的位置处,牵引臂以至少约8°的角度定向,并且优选地至少为 约10°,相对于底盘中心线。 在该位置,牵引臂的后端可以位于主体板(通常为侧板)的至少一部分的内侧。 后臂的后端设置在车身面板和底盘的中心线之间。
    • 5. 发明授权
    • Snowmobile front suspension
    • 雪车前悬挂
    • US06328124B1
    • 2001-12-11
    • US09416926
    • 1999-10-13
    • Jerry A. OlsonJeffrey A. Eaton
    • Jerry A. OlsonJeffrey A. Eaton
    • B62M2702
    • B62M27/02B62M2027/026
    • A front snowmobile suspension of the type having a ski carried at the front end of a trailing arm. The rear end of the trailing arm is pivotably secured to the chassis and the front end of the trailing arm is pivotably secured to the chassis by a pair of generally transversely mounted radius rods which in turn are pivotably secured to the chassis. Each radius rod has an inner end pivotably attached to the chassis and an outer end pivotably attached to the front end of the trailing arm. The outer ends of the radius rods are positioned forwardly of the inner ends of the radius rods a sufficient distance that the radius rods, viewed from the top, form an angle of at least about 15° with respect to a transverse plane that is perpendicular to the chassis centerline.
    • 具有在拖臂的前端承载的滑雪板的类型的前雪地车悬架。 牵引臂的后端可枢转地固定到底盘,并且牵引臂的前端通过一对大致横向安装的半径杆可枢转地固定到底盘,该杆又可枢转地固定到底盘。 每个半径杆具有可枢转地附接到底盘的内端和可枢转地附接到拖臂的前端的外端。 半径杆的外端位于半径杆的内端的前方的足够的距离处,使得从顶部观察的半径杆相对于垂直于...的横向平面形成至少约15°的角度 机箱中心线。
    • 6. 发明授权
    • Snowmobile front suspension
    • 雪车前悬挂
    • US6125958A
    • 2000-10-03
    • US947984
    • 1997-10-09
    • Jerry A. OlsonJeffrey A. Eaton
    • Jerry A. OlsonJeffrey A. Eaton
    • B62M27/02B62B13/08
    • B62M27/02B62M2027/026
    • A front snowmobile suspension of the type having a ski carried at the front end of a trailing arm. The rear end of the trailing arm is pivotably secured to the chassis and the front end of the trailing arm is pivotably secured to the chassis by a pair of generally transversely mounted radius rods which in turn are pivotably secured to the chassis. Each radius rod has an inner end pivotably attached to the chassis and an outer end pivotably attached to the front end of the trailing arm. The outer ends of the radius rods are positioned forwardly of the inner ends of the radius rods a sufficient distance that the radius rods, viewed from the top, form an angle of at least about 15.degree. with respect to a transverse plane that is perpendicular to the chassis centerline.
    • 具有在拖臂的前端承载的滑雪板的类型的前雪地车悬架。 牵引臂的后端可枢转地固定到底盘,并且牵引臂的前端通过一对大致横向安装的半径杆可枢转地固定到底盘,该杆又可枢转地固定到底盘。 每个半径杆具有可枢转地附接到底盘的内端和可枢转地附接到拖臂的前端的外端。 半径杆的外端位于半径棒的内端的前方,该距离从顶部观察到的半径杆相对于垂直于...的横向平面形成至少约15°的角度 机箱中心线。
    • 7. 发明授权
    • Two stage flowmeter
    • 双级流量计
    • US4232549A
    • 1980-11-11
    • US966844
    • 1978-12-06
    • Robert S. MigrinJerry A. Olson
    • Robert S. MigrinJerry A. Olson
    • G01F1/44G01F5/00
    • G01F5/005G01F1/44
    • A low pressure drop air flowmeter for an automobile engine is disclosed. The meter contains a main air flow passage, a relatively small venturi to receive a portion of the air flow, pressure ports for sensing stagnation and static pressure and a set of swirl vanes disposed adjacent the outlet of the venturi and operative to impart a swirl to the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressure without appreciably increasing the pressure drop across the flowmeter. A tertiary passage provides a path of fluid communication between points upstream and downstream of the swirl vanes. This passage can be selectively opened or restricted by a valve which, in the preferred embodiment of the invention, opens the tertiary passage with increasing overall flow rate. This arrangement results in a fluid flowmeter having a characteristic pressure drop which is less than that of a conventional device, particularly at high flow rates. Also disclosed is a solenoid valve operative to selectively sample stagnation pressure in the tertiary passage and signal pressure in the throat of the venturi and generate an electrical output signal as a function of the difference between these two pressure signals.
    • 公开了一种用于汽车发动机的低压降空气流量计。 该仪表包含主空气流通道,相对较小的文丘里管以接纳气流的一部分,用于感测停滞和静压的压力端口以及邻近文丘里管出口设置的一组旋流叶片, 在主通道中剩余的空气,从而在文氏管出口处产生减压,用于放大停滞和静压之间的压力差,而不会明显地增加流过流量计上的压降。 第三通道提供在旋流叶片上游和下游的点之间的流体连通路径。 该通道可以由阀门选择性地打开或限制,在本发明的优选实施例中,阀门随着总流量的增加而打开第三通道。 这种布置导致流体流量计具有比常规装置小的特征压降,特别是在高流量下。 还公开了一种电磁阀,其可操作以选择性地采集第三次通道中的停滞压力和文丘里管喉部中的信号压力,并产生作为这两个压力信号之间差异的函数的电输出信号。
    • 9. 发明授权
    • Single path adjustable flowmeter
    • 单路可调式流量计
    • US4324143A
    • 1982-04-13
    • US187294
    • 1980-09-15
    • Jerry A. Olson
    • Jerry A. Olson
    • G01F1/32G01F1/36G01F1/44G01F1/50
    • G01F1/44G01F1/36
    • A low pressure drop air flowmeter (10) for an automotive engine is disclosed. The meter includes a main air flow passage (26), a relatively small venturi tube (28) receiving a portion of the air flow, a pressure port (74) for sensing stagnation pressure in the main passage, a pressure port (70) for sensing static pressure in the throat of the venturi, and a complimentary pair of sets of stationary swirl vanes (30 & 32) disposed adjacent the outlet of the venturi and operative to jointly impart a swirl through the remainder of the air in the main passage, thereby creating a reduced pressure at the venturi outlet for amplifying the pressure difference between the stagnation and static pressures without appreciably increasing the pressure drop across the flowmeter. The sets of swirl vanes are rotationally displaceable with respect to one another, allowing some of the air to bypass the effect of the swirl vanes without being diverted to a separate passageway. This arrangement results in a fluid flowmeter having a characteristic pressure drop which is less than that for a conventional device, particularly at high flow rates, and which can be easily reconfigured to suit a specific application. Also disclosed is a solenoid valve (54) operative to selectively sample stagnation pressure in the main flow passage and signal pressure in the throat of the venturi and generate an electrical output signal as a function of the difference between these two pressure signals.
    • 公开了一种用于汽车发动机的低压降空气流量计(10)。 仪表包括主空气流通道(26),容纳空气流的一部分的相对较小的文丘里管(28),用于检测主通道中的停滞压力的压力端口(74),用于 感测文丘里管喉部的静压,以及邻近文丘里管出口设置的一对固定旋流叶片(30和32),并且可操作地共同地在主通道中通过空气的其余部分产生涡流, 从而在文氏管出口处产生减小的压力,用于放大停滞和静压之间的压差,而不会明显地增加流过流量计上的压降。 涡旋叶片组可以相对于彼此旋转地移动,允许一些空气绕过涡旋叶片的效果而不被转移到单独的通道。 这种布置导致流体流量计具有小于常规装置的特性压降的流体流量计,特别是在高流量下,并且可以容易地重新配置以适合具体应用。 还公开了一种电磁阀(54),其可操作以选择性地对主流道中的停滞压力和文氏管喉部的信号压力进行采样,并产生作为这两个压力信号之间差的函数的电输出信号。