A case-emphasized propulsion method improves vehicle fuel efficiency. The ratio of the most-used speed to the most-desired speed of an IC engine is employed to control the engine to always run at its optimal working state with an efficient single-stage gea...

Provided is a shift control device for a vehicle in which an automatic transmission in which a gear stage is set based on data showing traveling states including at least a driving demand is mounted, the shift control device for a vehicle setting a neutral...

When an operating point that is determined by the engine speed (Ne), the engine torque (Te), and the vehicle speed falls within the zones of both a first vibration risk region (±1) and a second vibration risk region (±2), the dwell time (T1) thereof is m...

Process for controlling an automatic transmission in a drive branch of a motor vehicle comprises charging characteristics of a distance from a data base into a buffer storage unit, recording the driving situation of the vehicle and variables of the driving...

The control method is for a motor vehicle automatic gearbox in which the gear ratio of the gearbox is set by rules of a driving control program running in a control unit (12). Accordingly the driving control program is used to detect a certain pattern of m...

The method involves taking into account the operating mode capable of producing the required torque, whereby fuel is injected directly in the combustion chamber during the compression phase in one mode and during the induction phase in the other mode. Pred...

A control system/method to minimize unwanted shifts in an automated mechanical transmission system (12). Initiation of shifts are prohibited unless throttle position (THL) has achieved a substantially steady-state value (¾(d/dt(THL))¾

The method involves specifying a value characterizing at least one basic change program and generating at least part of the characteristic value for each further theoretically possible useful change program by setting an offset of the characteristic value ...

The system provides control of the gear change in an automatic gearbox (19) and, in automatic mode, includes an electronic supervision system to determine the transmission ratio using a rule based on the intermediate values. A further system detects and ta...