Abstract:
An ECU executes a program which includes a step (S106) of performing a process of inhibiting lock-up when a predetermined condition is established (YES in S100, YES in S104, and YES in S108), a step (S110) of performing small injection amount learning, a step (S120) of performing lock-up control if a turbine rotation speed is not decreased (YES in S112), elapsed time is at least predetermined time L (YES in S114), and a slip amount is smaller than I (1) (YES in S118), and a step (S124) of terminating slip control if the turbine rotation speed is decreased (NO in S112), and the slip amount is at least I (1) (NO in S118).
Abstract:
A power generation system having a fuel reformer (12) positioned inline with an engine exhaust stream. A transmission controller (10) selects torque ratios and thereby operating points for the engine (9) in order to facilitate start-up or operation of the fuel reformer (12) . In one embodiment, the controller selects operating points to heat the exhaust and thus the reformer prior to starting the reformer. In another embodiment, the controller selects operating points to reduce or limit the oxygen concentration in the exhaust during denitration or desulfation of a LNT (14) . In a further embodiment, the controller selects operating points to reduce a fuel penalty for a regeneration. The fuel penalty includes at least a contribution associated with consuming excess oxygen in the exhaust .
Abstract:
The invention relates to a method for safety improvement when a motor vehicle (100) comprising a power train with an engine (230), automatic gearbox (240) and torque converter (237) is stationary and particle filter (320) for the exhaust gases of the engine (230) is being regenerated, comprising the step of applying safety brake action to keep the vehicle (100) stationary despite torque transfer being maintained in said power train. The method comprises also the step of choosing in said gearbox (240) a gear step which is higher than an initial gear step of said gearbox (240) in order to reduce the torque transferred to the vehicle's tractive wheels (247a, 247b) when the vehicle is thus kept stationary. The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to a device for safety improvement when a motor vehicle (100) is stationary and a particle filter (320) for the exhaust gases of the engine (230) is being regenerated, and to a motor vehicle (100) equipped with the device.
Abstract:
A method and associated system for compensation of vehicle speed lag resulting from changing load conditions in a continuously variable transmission (CVT) vehicle includes detecting and measuring true engine torque resulting from load changes placed on the vehicle engine. A true engine speed droop is calculated from the true engine torque. A compensated engine speed signal is generated based on the calculated true engine speed droop and is applied to the engine to produce a true engine speed that corresponds to a target engine speed at the load condition corrected for true engine speed droop.