Road Transport TRIZ Cases

Brake-state feedback and road-slope sensing let commercial vehicles coast for fuel savings, then return to power mode when braking force is insufficient.

Dynamic clutch control switches between coasting and constant-speed downhill travel to cut fuel use while smoothing speed changes.

Tracks each leading vehicle separately to calculate coasting viability, improving autonomous coasting decisions in variable traffic.

Pulse-and-glide parameters are adjusted by visibility and following distance to cut fuel use without unsettling nearby drivers.

Predicts speed and distance through coasting entry, then decouples the drive motor to save energy without losing target tracking.

Braking-state feedback enables commercial vehicles to enter coasting on suitable slopes and return to power mode when braking force is insufficient.

A communication valve and direct clutch switch hydraulic and mechanical paths to cut heat loss and improve vehicle transmission efficiency.

Topography-based mode switching extends freewheeling, preserves acceleration response, and reduces fuel use, emissions, and brake wear.

Coordinated gear-ratio and brake control maintains downhill coasting speed while reducing brake load and limiting shift shock and vibration.

Topography-based switching between two freewheeling modes preserves acceleration readiness while cutting fuel use, emissions, and engine wear.

Predicted distance and speed profiles let a vehicle enter or exit coasting while preserving target gaps, speed control, comfort, and energy savings.

An ECU switches between coasting and deceleration assistance based on target detection and driver input to cut energy use without delaying response.

Rear sensors let adaptive cruise control limit coasting when a following vehicle is detected, improving fuel use without disrupting traffic.

A driver model inserts a coasting state between acceleration and braking to follow target speed while cutting fuel use and emissions.

Dynamic clutch capacity control switches between cruise and inertial downhill travel to save fuel, smooth speed recovery, and reduce discomfort.

Route-based speed forecasting limits automatic coasting to cases where the vehicle can return to cruise target speed without prolonged deceleration.

A state-based driver model inserts a sailing phase between speed changes to follow target speed curves with lower fuel use and emissions.

Coasting scenarios are identified in advance so autonomous vehicles can plan fuel-saving trajectories while checking road grade, wind, and safety conditions.

Scenario-based coasting estimation uses road grade, resistance, and wind to plan safe vehicle trajectories that cut fuel use without losing speed control.

Driver-selected lower gears keep sailing deactivated after switching back to automatic mode, preserving engine braking without brake use.

Simultaneous paddle segment activation sets cruising mode from the steering wheel, simplifying transmission control with minimal hand movement.

Limits post-fuel-cut driving force requests to actuator capability, suppressing driveshaft twist, vibration, and noise during recovery.

Hysteresis-based speed profiles add coasting buffers to avoid sudden braking from sensor errors while improving ride comfort and fuel efficiency.

A communication valve blocks and reconnects hydraulic main lines to stabilize clutch switching and improve wheel loader transmission efficiency.

A lower-than-recommended gear detected during manual-to-automatic shifting disables sailing mode, preserving engine braking without brake use.

A one-way clutch and actuator-driven clutch device simplify torque switching in a differential while supporting longer vehicle coasting.

After temporary driver acceleration, the controller detects overspeed and enters coasting only when needed to restore set speed with better comfort and fuel use.

A coasting viability factor separates vehicle tracking from coast decisions, improving autonomous driving response to varying leading vehicles.

During coasting, the control unit predicts drag-loss conditions and selectively closes extra shifting elements to prevent rolling while saving fuel.

Fluid pressure gradients and ferrofluid sealing recover interior pressure energy as unidirectional torque without volume change.

Temporary torque converter unlock during direction changes absorbs drivetrain shocks and jitter while preserving fuel economy.

Adaptive lockup timing delays and restarts clutch engagement on high-resistance starts to reduce driver discomfort while preserving fuel economy.

Static fluid pressure gradients drive continuous torque through buoyancy and dynamic sealing, capturing water's interior pressure energy without volume change.

A transmission controller monitors speed, gear, fueling, and grade to override Manual, Hold, or Low modes when Drive is more fuel efficient.

When manual, hold, or low modes are unnecessary, control logic returns the transmission to Drive Mode to cut excess fuel use.

A locked torque converter briefly opens during torque-direction changes, absorbing shocks before relocking to preserve fuel economy.

A hybrid transmission clutch disengages the torque converter during idle to eliminate speed differentials and reduce windage losses.

A drivetrain controller modifies valve timing to reduce compression work during engine operation.