会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Method of determining rubbing friction torque in a motor vehicle powertrain
    • 确定汽车动力总成摩擦转矩的方法
    • US06874360B1
    • 2005-04-05
    • US10668383
    • 2003-09-23
    • Krishnendu KarSergio Eduardo Garcia
    • Krishnendu KarSergio Eduardo Garcia
    • G01L3/26G01M15/00
    • G01L3/26
    • A method of determining the rubbing friction torque involves characterizing fuel cutoff engine deceleration, and calculating the rubbing friction torque for any combination of engine speed and powertrain temperature is calculated in accordance with a base point rubbing friction torque RFTbase determined at a base powertrain temperature Tbase and fuel cutoff characterization data. The calibration data characterizing fuel cutoff engine deceleration is obtained by alternately enabling and cutting off engine fuel delivery to cycle the engine speed between specified set points, and measuring and recording the engine deceleration during intervals of fuel cutoff. The rubbing friction torque RFTtest at a given test temperature Ttest is calculated according to R ⁢   ⁢ F ⁢   ⁢ T rest = ( R ⁢   ⁢ F ⁢   ⁢ T base + P ⁢   ⁢ F ⁢   ⁢ T base ) × D ⁢   ⁢ E ⁢   ⁢ C ⁢   ⁢ E ⁢   ⁢ L test D ⁢   ⁢ E ⁢   ⁢ C ⁢   ⁢ E ⁢   ⁢ L base - P ⁢   ⁢ F ⁢   ⁢ T test , where DECELtest and DECELbase are the fuel cutoff engine decelerations at the test and base points, respectively, and PFTtest, and PFTbase are the pumping friction torques at the test and base points, respectively.
    • 确定摩擦摩擦转矩的方法涉及表征燃料切断发动机减速度,并且根据在基本动力系温度T base处确定的基点摩擦摩擦转矩RFTbase来计算发动机转速和动力系温度的任何组合的摩擦摩擦转矩,以及 燃料截止特征数据。 表征燃料切断发动机减速度的校准数据是通过交替地使能和切断发动机燃料输送以循环指定设定点之间的发动机转速,以及在燃料切断间隔期间测量和记录发动机减速度而获得的。 在给定的测试温度Ttest下的摩擦摩擦转矩RFT测试根据其中DECEL测试和DECELbase分别是测试和基点处的燃油切断发动机减速度,PFTtest和PFTbase是测试点和基点处的泵送摩擦转矩, 分别。
    • 6. 发明授权
    • Method for synchronizing a pulsetrain with engine cycle
    • 用于使脉冲串与发动机循环同步的方法
    • US06679108B2
    • 2004-01-20
    • US10143580
    • 2002-05-10
    • William R. RobertsonSergio Eduardo GarciaKevin Michael Foley
    • William R. RobertsonSergio Eduardo GarciaKevin Michael Foley
    • G01M1500
    • G01M15/06G01M15/11
    • A method of synchronizing a crankshaft signal with the stroke cycle of a four-stroke internal combustion engine induces misfiring in a specified engine cylinder, and uses an assumed synchronization to identify the misfiring cylinder. The crankshaft signal is used to identify reference angular positions of the crankshaft intermediate top dead center positions of consecutive cylinders of the engine firing order, and a time difference between successive reference positions is determined. When the assumed synchronization is such that the current rotation of the crankshaft includes the cylinder in which misfiring is induced, the determined time difference is accumulated in a first accumulator; otherwise, the determined time difference is accumulated in a second accumulator. The presence of misfiring causes the two accumulators to diverge in value, and the direction of such divergence is used to determine if the assumed synchronization is correct or incorrect.
    • 将曲轴信号与四冲程内燃机的冲程循环同步的方法在指定的发动机气缸中引起失火,并且使用假定的同步来识别失火气缸。 曲轴信号用于识别发动机点火顺序的连续气缸的曲轴中间上死点位置的参考角度位置,并且确定连续的参考位置之间的时间差。 当假设同步使得曲轴的当前旋转包括引起失火的气缸时,所确定的时间差积累在第一蓄能器中; 否则,确定的时差被累积在第二累加器中。 发生失火导致两个蓄电池的价值偏差,并且这种发散的方向用于确定假定的同步是否正确或不正确。