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    • 2. 发明授权
    • Malfunction diagnostic apparatus for evaporated fuel purge system
    • 蒸发燃料清除系统故障诊断装置
    • US06679111B2
    • 2004-01-20
    • US10156954
    • 2002-05-30
    • Shingo ShigihamaTetsushi HosokaiYoshimi YamamotoSeiji Makimoto
    • Shingo ShigihamaTetsushi HosokaiYoshimi YamamotoSeiji Makimoto
    • G01M1500
    • F02M25/0818
    • The present invention provides a malfunction diagnostic apparatus for an evaporated fuel purge system in an internal combustion engine, capable of detecting abnormalities such as looseness or clogging in the purge line between a purge valve and an engine intake passage. An electric pump 14 is turned on when a purge valve 5 is in a closed state and a selector valve 20 is in an open state. After the lapse of a given time period Tref, a load-current initial value I1 of the electric pump 14 is detected at the moment switching the selector valve 20 to a closed state. After the lapse of a given time period Tpump, the purge valve 5 is switched to an open state, and a load-current final value at the moment after the lapse of a given time period Tpurge. As in the curve A, when a load current final value I2A is equal to or less than the load current initial value I1, it is determined that the gaseous communication state in the purge line between the purge valve 5 and the intake passage is normal. On the other hand, as in the curves B and C, when load current final values I2B and I2C are greater than the load current initial value I1, it is determined that the gaseous communication state is abnormal. In case of abnormality, when the difference I2B−I1 therebetween is less than a gaseous-communication-state determination threshold fT1 as in the curve B, it is determined that the purge line is in an open-air state. If the difference I2C−I1 is equal to or greater than the gaseous-communication-state determination threshold fT1 as in the curve C, it is determined that the purge line is in a clogging state.
    • 本发明提供一种用于内燃机中的蒸发燃料吹扫系统的故障诊断装置,其能够检测在净化阀和发动机进气通道之间的净化管线中的松动或堵塞的异常。 当清洗阀5处于关闭状态并且选择阀20处于打开状态时,电动泵14接通。 在经过了给定时间段Tref之后,在将选择阀20切换到关闭状态的瞬间,检测到电动泵14的负载电流初始值I1。 在经过给定时间段Tpump之后,清洗阀5切换到打开状态,并且在经过给定时间段Tpurge之后的时刻的负载电流最终值。 如曲线A所示,当负载电流最终值I2A等于或小于负载电流初始值I1时,确定净化阀5和进气通道之间的净化管线中的气体连通状态正常。 另一方面,如曲线B和C所示,当负载电流最终值I2B和I2C大于负载电流初始值I1时,确定气体连通状态异常。 在异常的情况下,如果曲线B中的差异I2B-I1小于气体连通状态判定阈值fT1,则判断为净化线处于露天状态。 如果差异I2C-I1等于或大于气体通信状态判定阈值fT1,如曲线C那样,确定清除线处于堵塞状态。
    • 5. 发明授权
    • Control system for engine and transmission using two power modes
    • 使用两种功率模式的发动机和变速器控制系统
    • US4972737A
    • 1990-11-27
    • US299684
    • 1989-01-23
    • Seiji Makimoto
    • Seiji Makimoto
    • B60W10/04B60W10/06B60W10/10B60W10/11F02D29/00F02D41/00F02D41/04F02D41/10F16H59/08F16H59/48F16H59/74F16H59/78F16H61/00F16H61/02F16H63/40F16H63/50
    • B60W30/18B60W10/04B60W10/11B60W30/1819F16H61/0213F16H2059/084F16H2061/0015F16H2061/0096F16H2300/14F16H59/48F16H59/74F16H59/78Y02T10/76Y10T477/653Y10T477/679Y10T477/692
    • A control system for a vehicle with an automatic transmission in which the gear ratio is automatically changed in accordance with the operating condition of the vehicle includes a control means set for at least a first range if air-fuel ratios to be determined in accordance with engine speed and a second range of air-fuel ratios for controlling the air-fuel ratio of the engine to enrich a fuel mixture more than in the first range of air-fuel ratios. A shift control system has a first shift characteristic setting means for setting a first shift characteristic, and a second shift characteristic setting means for setting a second shift characteristic such that an upshift is effected in a higher vehicle speed range than that in the first shift characteristic. A characteristic changing means selects the first shift characteristic during ordinary driving (i.e. non-power driving) and the second shift characteristic during a specific operating condition. An air-fuel ratio changing means expands the first range of air-fuel ratios toward the high-speed side of engine operation when the second shift characteristic has been selected by the characteristic changing means to narrow the second range of air-fuel ratios. Thus, when an acceleration force is demanded during ordinary driving, the vehicle is driven to gain a sufficient acceleration force, and at the same time the air-fuel ratio enrichment control is restrained to control the worsening of fuel economy.
    • 一种具有自动变速器的车辆的控制系统,其中齿轮比根据车辆的运行状态而自动变化,包括如果要根据发动机确定的空燃比,至少设置一个第一范围的控制装置 速度和第二范围的空燃比,用于控制发动机的空燃比,以使燃料混合物比空燃比的第一范围更多。 变速控制系统具有用于设定第一变速特性的第一变速特性设定单元和用于设定第二变速特性的第二变速特性设定单元,使得在比第一变速特性中更高的车速范围内进行升档 。 特征改变装置在特定操作条件期间选择普通驾驶(即非动力驱动)期间的第一换档特性和第二换档特性。 当通过特征改变装置选择第二换档特性以缩小第二空燃比范围时,空燃比改变装置将空燃比的第一范围扩大到发动机运转的高速侧。 因此,当在普通驾驶中需要加速力时,驱动车辆获得足够的加速力,同时抑制空燃比浓缩控制以控制燃料经济性的恶化。