Hybrid Vehicles TRIZ Cases

Route-aware speed profiling enables vehicles to coast efficiently, cutting fuel use while preserving safe spacing and acceptable drivability.

Controller logic lowers fan or compressor duty from window, speed, and nearby structure signals to cut cabin noise without losing needed cooling.

A Gaussian-approximated speed profile predicts regenerative energy and sets motor-use regions to improve hybrid vehicle fuel efficiency.

Multiple planetary gears and selective clutches enable launch, propulsion, and regenerative modes without torque converters or launch clutches.

Preemptive engine speed adjustment during transmission engagement and disengagement cuts driveline torque disturbance in hybrid gear shifts.

Two independently driven rotors and a selective clutch cut reflected inertia in work vehicle IVTs, improving shift quality and mode transitions.

During assisted deceleration, selective downshift restriction cuts NV and busy shifting while regenerative braking still delivers the needed vehicle slowdown.

Real-time emissions feedback shifts load from engine to motor, cutting NOx under faults or aging while maintaining vehicle power.

Shift inhibition during HEV deceleration extends regenerative braking and uses engine clutch slip control for quicker restart response.

Time-series and statistical vehicle-state data improve engine control by predicting driver behavior across traffic environments to cut fuel use.

A multi-position claw clutch replaces separate clutches in a hybrid powershift transmission to simplify packaging and keep traction during shifts.

When low-voltage battery power drops, a standby supply and switching circuit keep the hybrid electromagnetic clutch engaged to avoid default-open breakdowns.

Urea dosing during vehicle off-states builds SCR ammonia storage before restart, improving cold-start NOx conversion while limiting NH3 slip.

A stepped planetary EV gear unit uses integrated shifting elements to keep motive power during ratio changes while reducing complexity and space.

Coolant temperature modeling across parallel DC converter strands detects faulty temperature sensors and prevents overheating by isolating the affected strand.

A blocking element and selector fork axially engage or disengage coaxial drive shafts to cut friction loss, noise, and motor overspeed risk.

Brief accelerator inputs on short slopes are detected to suppress unnecessary engine starts in hybrid driving, improving fuel use and comfort.

A three-motor planetary layout places clutches within the gearset to cut drive-unit width, support smooth shifting, and fit tight vehicle packaging.

Dynamic clutch torque control delivers cranking torque for engine start, then lowers capacity to cut shock, inertia drag, and energy loss.

Correction blocks adjust each phase battery pack setpoint from charge, temperature, and health states to prevent imbalance and premature exhaustion.

Road surface sensing shifts engine-to-motor switching before a geofencing boundary to reduce slip risk and maintain traction in wet conditions.

Pre-calculated motor torque in target gears speeds EV-to-HEV kick-down shifts while reducing torque mismatch and shift delay.

Pre-transmitted engine operation data and a waiting time align motor torque compensation with cylinder fuel cutoff to avoid torque shock.

A transverse motor above the engine preserves saddle-type vehicle dimensions while simplifying hybrid assembly and power transfer.

Temporary clutch torque reduction during engine cranking synchronizes engine and motor speeds to suppress vehicle shock during mode switching.

By reducing generator motor load torque before acceleration, this case keeps motor response consistent across battery charge states while limiting fuel use.

Actual clutch torque and engine speed integration are used to abort failed hybrid engine starts before a jammed engine damages the disconnect clutch.

A planetary differential power train starts pumps under load and widens variable-speed operation without frequency-converter losses.

A rearward radiator uses relative wind to continuously cool the drive motor and inverter while preserving compact hybrid motorcycle packaging.

Dynamic SOC thresholds and idle-speed control cut stationary engine starts, noise, and emissions in restricted geofenced areas.

Gradual pre-raising of engine speed lets a hybrid vehicle meet predicted power demand while limiting sudden engine sound and vibration.

Direct DC blade motors replace belts and pulleys, cutting maintenance and letting blade speed stay high without raising engine RPM.

Predefined chassis interfaces let trucks swap power plants and drivetrains without full redesign, cutting design time and cost.

A sensor-guided UGV tracks movable targets to automate agricultural work, reducing manual operation while improving navigation consistency.

Multiple storage units, switching logic, and status monitoring keep braking and steering loads powered during vehicle power failures.

Selective efficiency maps split torque between engine-linked and transmission-input motors to improve hybrid EV energy use and acceleration.

Dual margin thresholds let a hybrid vehicle maintain or adjust CD and CS route plans after suspension, improving energy use and fuel economy.

A virtual clutch torque term limits electric motor over-torque in hybrid drivetrains, preserving target acceleration and battery charge.

Iterative front and rear axle torque limiting keeps total wheelset torque aligned with driver demand while preventing instability and untimely acceleration.

During detected instability, torque split is held and braking intervenes until grip recovers, preventing wheel slip and sharp speed rise.

High-frequency motor speed vibrations reveal transmission backlash, enabling early wear detection, torque reduction, and smoother EV drivability.