Method of supplying fuel to an internal combustion engine during start-up
    2.
    发明授权
    Method of supplying fuel to an internal combustion engine during start-up 失效
    在启动期间向内燃机供应燃料的方法

    公开(公告)号:US4438748A

    公开(公告)日:1984-03-27

    申请号:US353825

    申请日:1982-03-02

    IPC分类号: F02D41/06 F02D41/14 F02N17/00

    CPC分类号: F02D41/061 F02D41/1497

    摘要: In a method of supplying fuel to an internal combustion engine during start-up, the occurence of combustion is detected to arrest the change of the fuel supply quantity until steady-state engine operation is achieved. Combustion is detected by comparing sensed engine speed to a minimum engine speed resulting from combustion in the cylinders. Additionally, control values used to derive the start-up fuel quantity are modified so that the fuel quantity increases monotonically from a relatively low initial value until fuel ignition is detected.

    摘要翻译: 在启动期间向内燃机供给燃料的方法中,检测出燃烧的发生,以阻止燃料供给量的变化,直到实现稳态发动机运转。 通过将感测的发动机速度与由气缸中的燃烧产生的最小发动机转速进行比较来检测燃烧。 此外,用于导出启动燃料量的控制值被修改,使得燃料量从相对低的初始值单调增加,直到检测到燃料点火。

    Back-up system and method for engine coolant temperature sensor in
electronic engine control system
    3.
    发明授权
    Back-up system and method for engine coolant temperature sensor in electronic engine control system 失效
    电子发动机控制系统中发动机冷却液温度传感器的备份系统和方法

    公开(公告)号:US4556029A

    公开(公告)日:1985-12-03

    申请号:US479482

    申请日:1983-03-28

    摘要: A back-up system for an engine coolant temperature sensor detects deviation of the output of the temperature sensor from its designed output range to produce a fault signal. In response to the fault signal, an engine control system derives the engine coolant temperature indirectly from other engine conditions. This derivation is based on two facts: (1) the amount of fuel required to start the engine is related to engine temperature, and (2) since the calorific value of a given engine is essentially constant, the rate of increase of engine temperature is related to the integrated number of engine revolutions. Thus, when the engine is to be started, engine temperature can be derived by gradually increasing the fuel supply quantity from a minimal initial value until the engine is able to start to determine the required fuel supply quantity. Thereafter, the derived temperature value can be updated as a function of total engine revolutions.

    摘要翻译: 用于发动机冷却剂温度传感器的备用系统检测温度传感器的输出与其设计的输出范围的偏差,以产生故障信号。 响应于故障信号,发动机控制系统从其他发动机状况间接地导出发动机冷却液温度。 这个推导是基于两个事实:(1)起动发动机所需的燃料量与发动机温度有关,(2)由于给定发动机的发热量基本上是恒定的,发动机温度的增加率为 与发动机整体转数有关。 因此,当发动机起动时,可以通过从最小初始值逐渐增加燃料供给量直到发动机能够开始确定所需的燃料供给量来获得发动机温度。 此后,导出的温度值可以作为总发动机转数的函数来更新。

    Air/fuel ratio control system for internal combustion engine and method
therefor
    4.
    发明授权
    Air/fuel ratio control system for internal combustion engine and method therefor 失效
    内燃机空燃比控制系统及其方法

    公开(公告)号:US4543934A

    公开(公告)日:1985-10-01

    申请号:US562089

    申请日:1983-12-16

    IPC分类号: F02D41/14 F02M51/00

    摘要: An air/fuel ratio control system is applicable to lean mixture combustion internal combustion engines. The control system determines the value of the mixture ratio at which engine stability can switch between stable and unstable conditions. As long as the engine continues to run in a stable condition in which the engine roughness is within an acceptable range, the mixture is intermittently leaned out by a given proportion. On the other hand, when engine roughness in an unacceptable range is detected, the mixture ratio is enriched by a given proportion to overcome the unacceptable engine roughness. Enrichment of the mixture is continued until engine roughness within the acceptable range is detected.

    摘要翻译: 空燃比控制系统适用于稀混合燃烧内燃机。 控制系统确定发动机稳定性在稳定和不稳定状态之间切换的混合比的值。 只要发动机在发动机粗糙度在可接受范围内的稳定状态下继续运转,则混合物间歇地倾斜一定比例。 另一方面,当检测到不可接受的范围内的发动机粗糙度时,以给定的比例浓缩混合比,以克服不可接受的发动机粗糙度。 继续浓缩混合物,直到检测到发动机粗糙度在可接受的范围内。

    Fuel supply control system for an internal combustion engine
    6.
    发明授权
    Fuel supply control system for an internal combustion engine 失效
    用于内燃机的燃料供应控制系统

    公开(公告)号:US4387681A

    公开(公告)日:1983-06-14

    申请号:US230289

    申请日:1981-01-30

    CPC分类号: F02M3/045 F02D41/123

    摘要: Fuel consumption of a declerating automotive vehicle internal combustion engine is reduced while preventing stalling. In response to a valve for selectively supplying air and fuel to the engine being in a fully closed condition, a first signal is derived. In response to the engine speed dropping below a first predetermined value a second signal is derived. In response to derivation of the first and second signals a controller for the valve is activated. The controller responds to engine and brake responsive parameters of the vehicle for opening the valve in respone to any of: (a) the engine being decelerated under no load, and (b) the brake being abruptly applied and (c) the engine speed dropping below a second value. The second value is less than the first value and is determined in response to the rate of change of engine speed.

    摘要翻译: 减速机车内燃机的燃油消耗减少,同时防止停车。 响应于用于选择性地向处于完全关闭状态的发动机供应空气和燃料的阀,得到第一信号。 响应于发动机转速下降到第一预定值以下,得到第二信号。 响应于第一和第二信号的推导,阀的控制器被激活。 控制器响应车辆的发动机和制动响应参数,以打开阀门中的任何一个:(a)发动机在空载下减速,(b)制动器突然施加,(c)发动机转速下降 低于第二个值。 第二值小于第一值,并且响应于发动机转速的变化率来确定。

    Power converter
    7.
    发明授权
    Power converter 有权
    电源转换器

    公开(公告)号:US08248042B2

    公开(公告)日:2012-08-21

    申请号:US13336621

    申请日:2011-12-23

    申请人: Tatsuo Morita

    发明人: Tatsuo Morita

    IPC分类号: G05F1/00 H02M7/5387

    摘要: A power converter includes an input terminal configured to be connected to a power supply, an output terminal, and a first switching element coupled between the input terminal and the output terminal. The first switching element includes a semiconductor multilayer structure formed on a substrate and made of a nitride semiconductor, a gate electrode formed on the semiconductor multilayer structure, a first and a second ohmic electrode, and a back electrode formed on a back surface of the substrate. A potential is supplied from the power supply connected to the input terminal to the back electrode so that a potential difference between the back surface and the second ohmic electrode is reduced. When the first switching element is in the on-state, a positive voltage bias is applied to the back electrode.

    摘要翻译: 功率转换器包括被配置为连接到电源,输出端子和耦合在输入端子和输出端子之间的第一开关元件的输入端子。 第一开关元件包括形成在衬底上并由氮化物半导体形成的半导体多层结构,形成在半导体多层结构上的栅电极,第一和第二欧姆电极以及形成在衬底的背面上的背电极 。 从连接到输入端子的电源向背面电极提供电位,使得背面与第二欧姆电极之间的电位差减小。 当第一开关元件处于导通状态时,正电压偏压被施加到背电极。

    FIELD EFFECT TRANSISTOR
    8.
    发明申请
    FIELD EFFECT TRANSISTOR 审中-公开
    场效应晶体管

    公开(公告)号:US20100207164A1

    公开(公告)日:2010-08-19

    申请号:US12682007

    申请日:2009-08-07

    IPC分类号: H01L29/772

    摘要: A field effect transistor includes a first nitride semiconductor layer 13 and a second nitride semiconductor layer 14 having a band gap larger than that of the first nitride semiconductor layer 13 which are formed in this order in an upward direction on a conductive substrate 11, a source electrode 15 and a drain electrode 16 which are electrically connected to a two-dimensional electron gas layer 21, and a gate electrode 18. A rise voltage of a drain-substrate current is lower than a rise voltage of a drain-gate current and a rise voltage of a drain-source current.

    摘要翻译: 场效应晶体管包括第一氮化物半导体层13和具有大于第一氮化物半导体层13的带隙的第二氮化物半导体层14,该第二氮化物半导体层14在导电基板11上沿向上方向依次形成,源极 与二维电子气体层21电连接的电极15和漏电极16以及栅极电极18.漏极 - 基板电流的上升电压低于漏极 - 栅极电流的上升电压,并且 漏 - 源电流的上升电压。

    Nitride semiconductor based bipolar transistor and the method of manufacture thereof
    9.
    发明授权
    Nitride semiconductor based bipolar transistor and the method of manufacture thereof 有权
    氮化物半导体双极晶体管及其制造方法

    公开(公告)号:US07728359B2

    公开(公告)日:2010-06-01

    申请号:US11812591

    申请日:2007-06-20

    IPC分类号: H01L51/00

    摘要: In a nitride semiconductor based bipolar transistor, a contact layer formed so as to contact an emitter layer is composed of n-type InAlGaN quaternary mixed crystals, the emitter layer and the contact layer are selectively removed so that the barrier height with the emitter formed thereon is small, and the ohmic electrode contact resistance can be lowered on the InAlGaN quaternary mixed crystals, for example, so that a WSi emitter electrode becomes an eave. A base electrode is formed by a self-aligned process using the emitter electrode as a mask. By such a configuration, the distance between the emitter and the edge of the base electrode is sufficiently shortened, and the base resistance can be lowered. As a result, a bipolar transistor having favorable high-frequency characteristics can be realized.

    摘要翻译: 在基于氮化物半导体的双极型晶体管中,形成为与发射极层接触的接触层由n型InAlGaN四元混晶构成,选择性地去除发射极层和接触层,使得其上形成有发射极的势垒高度 例如,在InAlGaN四元混晶中的欧姆电极接触电阻可以降低,使得WSi发射极成为檐。 通过使用发射电极作为掩模的自对准工艺形成基极。 通过这样的结构,能够充分地缩短发射极与基极的边缘之间的距离,能够降低基极电阻。 结果,可以实现具有良好的高频特性的双极晶体管。

    Semiconductor device and method for fabricating the same
    10.
    发明授权
    Semiconductor device and method for fabricating the same 有权
    半导体装置及其制造方法

    公开(公告)号:US07465968B2

    公开(公告)日:2008-12-16

    申请号:US11600067

    申请日:2006-11-16

    IPC分类号: H01L29/737

    摘要: A semiconductor device includes: a first nitride semiconductor layer having at least one projection on an upper surface thereof; a second nitride semiconductor layer formed on a top surface of the projection of the first nitride semiconductor layer and having a higher carrier concentration than the first nitride semiconductor layer; a first electrode formed on the second nitride semiconductor layer so as to overhang like a canopy and functioning as one of a source and a drain; and a second electrode formed to the side of the projection on the first nitride semiconductor layer and functioning as a gate.

    摘要翻译: 半导体器件包括:在其上表面上具有至少一个突起的第一氮化物半导体层; 第二氮化物半导体层,其形成在所述第一氮化物半导体层的所述突起的顶表面上,并且具有比所述第一氮化物半导体层更高的载流子浓度; 第一电极,形成在第二氮化物半导体层上,以便像顶盖一样悬垂并用作源极和漏极之一; 以及第二电极,其形成在第一氮化物半导体层上的突起侧并用作栅极。