Road Transport TRIZ Cases

A vehicle transmission control system determines optimal gearshifting stages based on preceding vehicle dynamics.

A vehicle control system adjusts transmission gear ratios based on engine RPM to optimize coasting distance.

A hydrostatic-mechanical transmission braking system uses an additional actuating device to introduce torque when the drive machine reaches impermissible speeds.

A lock-up clutch synchronizes engine and turbine speeds before re-engagement to improve fuel efficiency.

Electronic control unit manages driveline engagement during road speed governor operation to optimize vehicle fuel economy.

A retaining nut screws coaxially to a rotary drive to axially position a clutch device, eliminating stress from gear shaft tolerances and thermal expansion.

Controller reduces hydraulic differential pressure to lower brake torque, enabling gentle coasting and improved fuel efficiency.

A helical coil clutch assembly uses an electromagnet actuator to selectively engage a wrap spring with a drive member surface.

A vehicle power transmission control device executes regenerative torque reduction before the torque phase begins.

A clutch device uses an elastic member between the actuator and friction elements to establish a linear relationship between stroke and torque capacity.

A shifting control apparatus uses a gravity sensor to detect downhill grades before entering the section.

A torque split automatic transmission divides engine power into parallel paths for efficient delivery.

A DCT shift control method adjusts engine torque during the torque phase to maintain drive wheel force.