公开(公告)号：US5599254A

公开(公告)日：1997-02-04

申请号：US385710

申请日：1995-02-08

申请人： Naoki Tomisawa ,  Keita Yoshizawa

发明人： Naoki Tomisawa ,  Keita Yoshizawa

IPC分类号： F16H59/36 ,  F16H59/38 ,  F16H59/40 ,  F16H59/46 ,  F16H59/72 ,  F16H61/12 ,  F16H61/14 ,  F16D33/00 ,  B60K41/02

CPC分类号： F16H61/143 ,  F16H61/12 ,  F16H2059/385 ,  F16H2059/467 ,  F16H2061/1208 ,  F16H2061/1276 ,  F16H2061/145 ,  F16H59/36 ,  F16H59/40 ,  F16H59/72 ,  Y10T477/755

摘要： A slip condition of a torque converter is learned at a predetermined operating condition with a lock-up mechanism disengaged, and a diagnosis condition (for example a start time or judgement level of the fault diagnosis) used in diagnosing a fault in the lock-up mechanism on the basis of slip conditions of the torque converter which change after issue of a disengage command to the lock-up mechanism, is corrected in accordance with the learned result. As a result, the diagnosis condition which is conventionally set assuming a maximum viscosity for the operating fluid, can be changed to correspond to the actual viscosity of the operating fluid being used. Hence, the time delay from issue of a disengage command to the lock-up mechanism until starting fault diagnosis can be reduced, so that it is possible to diagnose if normal lock-up mechanism disengagement is being made at a response speed which follows the demands for rapid lock-up mechanism disengagement under operating conditions including acceleration and deceleration operating conditions such as encountered with city driving and the like.

摘要翻译： 在锁定机构脱离的情况下，在预定的操作条件下学习变矩器的滑动状态，以及用于诊断锁定中的故障的诊断条件（例如故障诊断的开始时间或判断水平） 根据学习结果来校正基于在对锁定机构进行分离命令的发生改变后的变矩器的滑动条件的机构。 结果，可以将通常设置为假定工作流体的最大粘度的诊断条件改变为与所使用的工作流体的实际粘度相对应。 因此，可以减少从分离指令发出到锁定机构直到开始故障诊断的时间延迟，从而可以诊断是否正在按照需求的响应速度进行正常锁定机制脱离 用于在包括诸如城市驾驶等遇到的加速和减速操作条件的操作条件下的快速锁定机构脱离。

公开(公告)号：US5615657A

公开(公告)日：1997-04-01

申请号：US579478

申请日：1996-01-04

申请人： Keita Yoshizawa

发明人： Keita Yoshizawa

IPC分类号： F02M37/00 ,  F02D41/04 ,  F02D41/32 ,  F02D45/00 ,  F02D41/34

CPC分类号： F02D41/32

摘要： An intake air pressure Pm downstream of a throttle valve of an internal combustion engine is estimated by computation from a basic fuel injection quantity Tp set for an intake air flow rate Q and an engine rotational speed Ne, an intake air temperature TA, and an intake air volumetric efficiency .eta., according to the equation Pm=C.multidot.Tp.multidot.TA/.eta.. The estimated intake air pressure Pm is then used in a fuel supply control system wherein the fuel injection pressure from a fuel injection valve is such that a differential pressure relative to atmospheric pressure is constant, to thereby correct the fuel injection period of the fuel injection valve. As a result, there is no requirement for a sensor for detecting intake air pressure. Moreover, since a reference pressure chamber of the pressure regulator can be opened to the atmosphere, piping can be shortened, enabling a more compact unit.

摘要翻译： 通过根据对进气量Q和发动机转速Ne设定的基本燃料喷射量Tp，进气温度TA和进气量来计算内燃机的节气门下游的进气压Pm 空气体积效率eta，根据公式Pm = CxTpxTA / eta。 然后，将估计的进气压力Pm用于燃料供给控制系统，其中来自燃料喷射阀的燃料喷射压力使得相对于大气压力的压差恒定，从而校正燃料喷射阀的燃料喷射周期 。 结果，不需要用于检测进气压力的传感器。 此外，由于压力调节器的基准压力室能够向大气开放，因此能够缩短配管，能够实现更紧凑的单元。