Two-speed transmission for electric vehicle including a pair of mechanical diodes that are individually engaged to provide two gear ratios

    公开(公告)号:US11346429B2

    公开(公告)日:2022-05-31

    申请号:US17208855

    申请日:2021-03-22

    Abstract: A two-speed transmission for an electric vehicle includes a planetary gear set selectively coupling an input shaft and an output shaft. The planetary gear set is configured to provide two forward gear ratios and neutral. The planetary gear set includes at least one sun gear, at least one pinion in meshing engagement with the at least one sun gear, at least one ring gear meshingly engaged with the at least one pinion, and a carrier. The carrier supports the at least one pinion and is connected to the output shaft such that rotation of the carrier drives the output shaft. The two-speed transmission also includes one or more elements that rotatably couple the at least sun gear, the at least one pinion, the at least one ring gear, the input shaft, and the carrier with one another and/or a ground. Examples of such elements include clutches, brakes, and mechanical diodes.

    Block Structure and Fastening Features for Opposed-Piston Four-Stroke Engines

    公开(公告)号:US20190093478A1

    公开(公告)日:2019-03-28

    申请号:US16135813

    申请日:2018-09-19

    Inventor: Vasile FRASINEL

    CPC classification number: F01B7/14 F02B75/282 F02F1/004 F02F1/186 F02F1/22

    Abstract: An engine block for an opposed-piston engine includes a first center section and a second center section. The first center section defines a first cylinder half bore having a first longitudinal axis and a first plurality of fastener bores. The second center section defines a second cylinder half bore having a second longitudinal axis and a second plurality of fastener bores that extend from a first end thereof to a second end thereof. The second center section is configured to abut the first center section such that: the first and second cylinder half bores are in fluid communication with one another to collectively form a single cylinder; the first and second longitudinal axes are offset from one another; and the first and second pluralities of fastener bores are aligned with one another for receiving a first plurality of fasteners to join the first and second center sections to one another.

    Torque split dual-clutch transmission

    公开(公告)号:US10221921B2

    公开(公告)日:2019-03-05

    申请号:US14941484

    申请日:2015-11-13

    Abstract: A torque split dual-clutch transmission assembly is disclosed that splits the torque generated by an engine between at least two sets of transfer gears that are selectively coupled to first and second layshafts or intermediate shafts. A first input hub is connected to the first layshaft by a first clutch and a second input hub is connected to the second layshaft by a second clutch. A first gearset is carried on the first layshaft and a second gearset is carried on the second layshaft. Each set of transfer gears receives torque from either the transmission input shaft or the first and second layshafts in response to contemporaneous engagement of the first clutch and the second clutch, which can be used during vehicle launch to split the torque applied to the first and second clutches.

    Engine turbo-compounding system
    24.
    发明授权

    公开(公告)号:US10072562B2

    公开(公告)日:2018-09-11

    申请号:US15050877

    申请日:2016-02-23

    Abstract: A turbo-compounding system may include a first turbine, a turbocharger, a bypass passageway and a valve. The first turbine may include an inlet in fluid communication with an exhaust manifold and an outlet in fluid communication with a fluid passageway. The first turbine may be drivingly coupled to an engine. The turbocharger includes a first compressor and a second turbine. The first compressor receives an intake fluid at a first pressure and discharges the intake fluid at a second pressure. The second turbine may drive the first compressor and receive exhaust gas from the fluid passageway downstream of the outlet of the first turbine. The bypass passageway may include a first end fluidly coupled with the engine exhaust manifold and a second end fluidly coupled with the fluid passageway downstream from the first turbine and upstream of the second turbine. The valve controls fluid-flow through the bypass passageway.

    Multi-level torque clutch
    26.
    发明授权

    公开(公告)号:US09920795B2

    公开(公告)日:2018-03-20

    申请号:US14956861

    申请日:2015-12-02

    CPC classification number: F16D13/70 F16D13/52 F16D25/0638

    Abstract: A clutch assembly is disclosed having a clutch housing and a shaft. A clutch pack selectively couples rotation of the clutch housing and the shaft. The clutch pack includes a primary backing plate, a reaction plate, first and second friction plates disposed between the backing plate and the reaction plate, and a secondary backing plate disposed between the first and second friction plates. A first actuator selectively applies pressure to the reaction plate to move the reaction plate toward the primary backing plate. A second actuator controls movement of the secondary backing plate to switch the clutch pack between a low torque state and a high torque state. In the low torque state, the secondary backing plate cannot move longitudinally toward the primary backing plate beyond a locked position. In the high torque state, the secondary backing plate can move beyond the locked position.

    Clutch with opposite load application

    公开(公告)号:US09677622B2

    公开(公告)日:2017-06-13

    申请号:US15051085

    申请日:2016-02-23

    CPC classification number: F16D13/52 F16D13/46 F16D25/0638

    Abstract: A clutch assembly that is less prone to overheating is disclosed. The clutch assembly includes a clutch housing, a shaft, and a clutch pack. The clutch pack includes a first apply plate, a second apply plate, a plurality of friction plates, and a plurality of reaction plates. The clutch assembly further includes a first actuator and a second actuator. The first actuator applies pressure to the first apply plate in a first direction to move the first apply plate toward the second apply plate. The second actuator applies pressure to the second apply plate in a second direction to move the second apply plate toward the first apply plate. The first direction is opposite the second direction such that the first and second actuators apply pressure to the clutch pack in opposing directions. This reduces localized temperature spikes in the clutch pack.

    Variable Drive For Liquified Natural Gas Pump
    29.
    发明申请
    Variable Drive For Liquified Natural Gas Pump 审中-公开
    液化天然气泵可变驱动器

    公开(公告)号:US20160252063A1

    公开(公告)日:2016-09-01

    申请号:US15051114

    申请日:2016-02-23

    Abstract: A fuel pump assembly including a fuel pump and a variable drive mechanism is provided. The fuel pump has a pump input shaft rotatably coupled to an impeller. The variable drive mechanism has a drive input shaft that receives torque from the engine of a vehicle and a drive output shaft that is rotatably coupled to the pump input shaft. The variable drive mechanism further comprises a planetary gearset interconnecting the drive input shaft and the drive output shaft. The planetary gearset has a variable gear ratio that varies rotational speed of the drive output shaft and therefore the pump input shaft relative to the rotational speed of the drive input shaft. Accordingly, the rotational speed of the pump input shaft and thus the volume flowrate of the fuel pump can be adjusted for any given engine speed to minimize pump related losses.

    Abstract translation: 提供了一种包括燃料泵和可变驱动机构的燃料泵组件。 燃料泵具有可旋转地联接到叶轮的泵输入轴。 可变驱动机构具有驱动输入轴,其接收来自车辆的发动机的转矩和可旋转地联接到泵输入轴的驱动输出轴。 可变驱动机构还包括将驱动输入轴与驱动输出轴相互连接的行星齿轮组。 行星齿轮组具有可变齿轮比,其可以相对于驱动输入轴的转速改变驱动输出轴的转速,因此改变泵的输入轴。 因此,可以针对任何给定的发动机转速来调节泵输入轴的转速以及因此燃料泵的体积流量以最小化泵的相关损失。

    Multi Injector Thermal Management System and Method
    30.
    发明申请
    Multi Injector Thermal Management System and Method 审中-公开
    多注射器热管理系统和方法

    公开(公告)号:US20160252040A1

    公开(公告)日:2016-09-01

    申请号:US15050792

    申请日:2016-02-23

    Abstract: A system according to the present disclosure controls first and second fuel injectors to inject fuel into a cylinder of an engine based on a measured crankshaft position. The system controls the first and second fuel injectors based on a first target injection parameter once every N firing cycles of the cylinder, where N is equal to the number of fuel injectors that are operable to inject fuel into the cylinder. The first target injection parameter includes at least one of a first pulse width and a first start-of-injection (SOI) timing. The system controls the first and second fuel injectors based on a second target injection parameter once every N firing cycles of the cylinder. The second target injection parameter includes at least one of a second pulse width and a second SOI timing that are different than the first pulse width and the first SOI timing, respectively.

    Abstract translation: 根据本公开的系统控制第一和第二燃料喷射器,以基于测量的曲轴位置将燃料喷射到发动机的气缸中。 该系统基于第一目标喷射参数来控制第一和第二燃料喷射器,每个N个点火循环一次,其中N等于能够将燃料喷射到气缸中的燃料喷射器的数量。 第一目标注入参数包括第一脉冲宽度和第一注入开始时间(SOI)中的至少一个。 该系统基于第二目标喷射参数来控制第一和第二燃料喷射器,每个N个点火循环一次。 第二目标注入参数分别包括与第一脉冲宽度和第一SOI定时不同的第二脉冲宽度和第二SOI定时中的至少一个。

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