Vacuum based fuel system
    11.
    发明授权
    Vacuum based fuel system 失效
    基于真空的燃料系统

    公开(公告)号:US06467464B2

    公开(公告)日:2002-10-22

    申请号:US09733011

    申请日:2000-12-08

    IPC分类号: F02M2508

    摘要: A zero emissions fuel system includes a fuel tank fluidly interconnected with a fuel vapor containment and absorption canister. The canister is further interconnected with an engine intake manifold via a purge solenoid valve that controls the extent to which a vacuum in the intake manifold affects the canister. The canister is also interconnected with the ambient environment via at least one selectively operable valve. During normal operation of the engine, the purge solenoid valve allows the intake manifold to draw fuel vapor from the canister for consumption by the engine. At a predetermined vacuum pressure, the at least one valve opens, thereby allowing outside air to flow into the system through the vacuum relief valve to facilitate purging of the canister.

    摘要翻译: 零排放燃料系统包括与燃料蒸气容纳和吸收罐流体互连的燃料箱。 通过净化电磁阀进一步将罐与发动机进气歧管相互连接,该清洗电磁阀控制进气歧管中的真空影响罐的程度。 罐还通过至少一个选择性可操作的阀与周围环境互连。 在发动机的正常操作期间,清洗电磁阀允许进气歧管从罐抽取燃料蒸汽以供发动机消耗。 在预定的真空压力下,至少一个阀打开,从而允许外部空气通过真空释放阀流入系统以便于清洗罐。

    Evaporative emission control apparatus for motor vehicle
    12.
    发明授权
    Evaporative emission control apparatus for motor vehicle 有权
    汽车用蒸发排放控制装置

    公开(公告)号:US06463915B2

    公开(公告)日:2002-10-15

    申请号:US09734566

    申请日:2000-12-13

    IPC分类号: F02M2508

    CPC分类号: F02M25/089 Y10T137/86035

    摘要: An evaporative emission control apparatus for a motor vehicle includes a fuel tank having a tank shell to store fuel therein, a canister disposed completely within the fuel tank to adsorb and temporarily store evaporative fuel generated in the fuel tank, and a bracket that is secured to the fuel tank to support the canister apart from the tank shell. The outer surface of the canister is set apart from the inner surface of the tank shell, so that the canister is less influenced by the environment temperature around the fuel tank, and so that the adsorption of the evaporative fuel is kept stable.

    摘要翻译: 一种用于机动车辆的蒸发排放控制装置,具有:燃料箱,其具有储存燃料的罐壳;完全设置在燃料箱内的吸附和临时存储在燃料箱内产生的蒸发燃料的罐;以及支架, 燃料箱用于支撑除罐壳外的罐。 罐的外表面与罐壳的内表面分开,使得罐受到燃料箱周围的环境温度的影响较小,从而使蒸发燃料的吸附保持稳定。

    Internal combustion engine
    13.
    发明授权
    Internal combustion engine 失效
    内燃机

    公开(公告)号:US06418891B2

    公开(公告)日:2002-07-16

    申请号:US09802145

    申请日:2001-03-08

    申请人: Takeshi Kobayashi

    发明人: Takeshi Kobayashi

    IPC分类号: F02M2508

    摘要: A two-stroke internal combustion engine having an air control arrangement which controls scavenging air flow during rapid engine acceleration to optimize the acceleration and maximum power output of the engine while maintaining low exhaust emissions from the engine. Desirably, the air control arrangement may comprise a valve that throttles the air passage to one half or less of its total flow area at a medium engine load or less and completely or fully opens at a medium engine load or more of the engine. Normally, the air control valve opens in unison with the throttle valve, but during rapid acceleration of the engine the air control valve opens later or more slowly than the throttle valve to control the supply of scavenging air to the combustion chamber of the engine thereby enhancing rapid acceleration of the engine.

    摘要翻译: 一种二冲程内燃机,其具有空气控制装置,其控制快速发动机加速期间的清除空气流,以优化发动机的加速和最大功率输出,同时保持来自发动机的低排气。 理想地,空气控制装置可以包括阀,其在中等的发动机负载或更小的时间将空气通道节流到其总流量面积的一半或更小,并且在发动机的中等的发动机负荷或更多的情况下完全或全部地打开。 通常,空气控制阀与节流阀一致地打开,但是在发动机的快速加速期间,空气控制阀比节流阀更晚或更慢地打开,以控制向发动机的燃烧室供应清除空气,从而增强 发动机快速加速

    Model based purge system
    14.
    发明授权
    Model based purge system 有权
    基于模型的吹扫系统

    公开(公告)号:US06253750B1

    公开(公告)日:2001-07-03

    申请号:US09232419

    申请日:1999-01-15

    IPC分类号: F02M2508

    摘要: A method is provided for accommodating the purge vapors from an evaporative emission control system of an automotive vehicle. The method includes a purge compensation model to identify the concentration of purge vapor entering the intake manifold of the engine of the automotive vehicle, identifying the source of the vapor as from the vapor collection canister or the fuel tank using a characteristic mapping of maximum concentration as a function of instantaneous flow and accumulated flow through a canister and uses this information to predict variations in vapor concentrations as a function of purge flow. The method also includes a purge control model which uses mode logic to identify an appropriate time to initiate a purge cycle, provides the flow conditions necessary for a learning portion of the purge compensation model and increases purge flow rates after the learning is complete to deplete the contents of the canister. The purge control model also manages the time spent with purge active (learning purge) and purge inactive (learning volumetric efficiency or EGR).

    摘要翻译: 提供了一种用于从汽车的蒸发排放控制系统容纳吹扫蒸汽的方法。 该方法包括净化补偿模型,以识别进入机动车辆的发动机的进气歧管的吹扫蒸汽的浓度,使用最大浓度的特征映射来确定来自蒸气收集罐或燃料箱的蒸汽源 通过罐的瞬时流量和累积流量的功能,并使用该信息来预测作为吹扫流量的函数的蒸气浓度的变化。 该方法还包括清洗控制模型,其使用模式逻辑来识别启动净化循环的适当时间,提供净化补偿模型的学习部分所需的流动条件,并且在学习完成以后消除所述吹扫流量 罐的内容物。 吹扫控制模型还管理清洗活动(学习吹扫)和清洗无效(学习容积效率或EGR)所花费的时间。

    Diagnostic apparatus for an evaporated fuel system, and vehicle control apparatus for a vehicle equipped with the diagnostic apparatus
    16.
    发明授权
    Diagnostic apparatus for an evaporated fuel system, and vehicle control apparatus for a vehicle equipped with the diagnostic apparatus 失效
    用于蒸发燃料系统的诊断装置和配备有诊断装置的车辆的车辆控制装置

    公开(公告)号:US06769419B2

    公开(公告)日:2004-08-03

    申请号:US10392306

    申请日:2003-03-20

    IPC分类号: F02M2508

    摘要: The present invention provides an evaporated fuel system diagnostic apparatus. The evaporated fuel system diagnostic apparatus includes a malfunction determination unit which determines whether a malfunction occurs in an evaporated fuel system, by introducing a negative pressure of an intake passage into a fuel tank. An operating condition setting unit sets, when the malfunction determination unit has started the introduction of the negative pressure of the intake passage into the fuel tank, an operating condition of an internal combustion engine in a predetermined condition that causes the negative pressure of the intake passage to be within a predetermined pressure range. Further, the present invention provides a vehicle control apparatus for an automotive vehicle equipped with the evaporated fuel system diagnostic apparatus.

    摘要翻译: 本发明提供蒸发燃料系统诊断装置。 蒸发燃料系统诊断装置包括故障确定单元,其通过将进气通道的负压引入燃料箱来确定在蒸发燃料系统中是否发生故障。 操作条件设定单元在故障判定单元开始将进气通路的负压引入燃料箱的情况下,设定在使进气通路的负压成为预定条件的内燃机的运转状态 在预定的压力范围内。 另外,本发明提供一种搭载有蒸发燃料系统诊断装置的机动车辆的车辆控制装置。

    Evaporative emission control apparatus
    18.
    发明授权
    Evaporative emission control apparatus 失效
    蒸发排放控制装置

    公开(公告)号:US06732718B2

    公开(公告)日:2004-05-11

    申请号:US10084979

    申请日:2002-03-01

    IPC分类号: F02M2508

    摘要: In a double-acting diaphragm pump, a diaphragm is provided to divide a pump body into two pump chambers. An electromagnetic-type reciprocating actuator is provided in a housing hermetically integrated with the pump body. Different from an electric-type pump, the actuator is integrally mounted on the double-acting diaphragm pump and an entire system is hermetically sealed. Therefore, even if the diaphragm is torn, fuel vapor is prevented from leaking outside. Additionally, four check valves are provided to control the discharge of vapor from a canister side to an engine side. These check valves may employ a reed to control vapor flow or a spring and plate to control flow. In addition, since the pump may be a double-acting type, a large discharge volume is obtained and the pump can be made smaller. The pump may also be a non double-acting type.

    摘要翻译: 在双作用隔膜泵中,提供隔膜以将泵体分成两个泵室。 电磁式往复式致动器设置在与泵体密封结合的壳体中。 与电动泵不同,致动器整体安装在双作用隔膜泵上,整个系统被气密密封。 因此,即使膜片被撕裂,也能防止燃料蒸汽泄漏到外部。 另外,设有四个止回阀以控制从罐侧到发动机侧的蒸气排放。 这些止回阀可以采用芦苇来控制蒸汽流,或者弹簧和板来控制流量。 此外,由于泵可以是双作用型,因此可以获得大的排出量,并且可以使泵更小。 泵也可以是非双作用型。

    Apparatus and method for controlling internal combustion engine
    19.
    发明授权
    Apparatus and method for controlling internal combustion engine 失效
    内燃机控制装置及方法

    公开(公告)号:US06729319B2

    公开(公告)日:2004-05-04

    申请号:US10178481

    申请日:2002-06-25

    IPC分类号: F02M2508

    摘要: Gas containing fuel vapor is purged as purge gas from a canister to an intake passage through a purge line. An ECU computes purge flow rate, which is the flow rate of the purge gas, and computes vapor concentration, which is the concentration of the fuel vapor contained in the purge gas. The ECU obtains a concentration correction value in accordance with the rate of change of the computed purge flow rate. The ECU correct the computed vapor concentration by using the concentration correction value and by taking into consideration of the time at which the purge flow rate is computed and the time at which purge gas having the computed flow rate is drawn into the combustion chamber. The ECU sets the fuel supply amount in accordance with the computed purge flow rate and the corrected vapor concentration. As a result, the accuracy of the air-fuel ratio control during purging is improved.

    摘要翻译: 含有燃料蒸汽的气体被吹扫为吹扫气体,从罐到净化管线的进气通道。 ECU计算吹扫流量,即净化气体的流量,并计算蒸汽浓度,蒸汽浓度是吹扫气体中所含的燃料蒸气的浓度。 ECU根据计算出的清洗流量的变化率来获得浓度校正值。 ECU通过使用浓度校正值并考虑计算清洗流量的时间和计算流量的吹扫气体被吸入燃烧室的时间来校正计算出的蒸汽浓度。 ECU根据计算的吹扫流量和校正的蒸气浓度来设定燃料供给量。 结果,提高了净化时的空燃比控制的精度。