Hybrid Vehicles TRIZ Cases

Pre-charge control raises battery reserve above update power needs during driving, so ECU program updates can complete reliably at stops.

A concentric coupling and gear layout cuts axial installation space in hybrid drives while preserving selective engine-motor power transfer.

A switch-resistor battery circuit limits short-circuit current, prevents deep discharge, and supports charge balancing in vehicle multi-voltage packs.

Coordinated torque control from two drive motors unloads shift elements at zero crossing, cutting drag losses and shift energy use.

A pressure-based feedforward clutch model compensates signal delay during hybrid engine start to improve torque accuracy and drivability.

Fuel-aware charging control shortens or shifts hybrid vehicle charging during congestion, using price incentives to keep facilities available.

Rear-priority regenerative braking shifts torque between front and rear motors to recover more energy while limiting wheel slip.

Stationary crankshaft and rotor sensing learns and corrects the engine-motor angle reference to maintain vibration reduction without an absolute motor sensor.

Capacitor voltage comparison detects switching faults and disconnects the high-voltage battery before low-voltage equipment is damaged.

Motor torque compensation based on engine-motor speed difference reduces clutch shaft torsion and preserves steering feel in hybrid EVs.

Negative motor torque recovers engine inertia for battery charging, while predicted feedback torque limits reverse rotation and vibration.

Automatic clip control adjusts reel speeds in turns while damping generator load spikes to limit engine droop and protect battery health.

High-precision motor speed data calibrates wheel speed signals to improve axle speed matching during clutch engagement in hybrid drivetrains.

During hybrid engine restart, motor-led speed reduction and low engine torque suppress intake-system irregular sound while keeping operation smooth.

A charging use index links hybrid vehicle behavior to toll, lane, parking, and fee incentives to increase external charging use.

Brake-based torque control lets a hybrid engine charge the battery in neutral while holding the vehicle stationary and reducing unintended motion.

Torque is cut before stepwise clutch pressure rise, enabling fast shift engagement while suppressing shock under verified speed and oil conditions.

A shift valve supplies motor shaft-center cooling oil only when needed, cutting oil-flow resistance and improving vehicle fuel efficiency.

A stepped groove and guiding member enable blind mounting of a transmission control device while protecting seals and supporting compact powertrain packaging.

Battery-backed cabin cooling reduces engine restarts after an emergency stop, lowering exhaust gas backflow and carbon monoxide risk.

During gear shifts, the controller moves lean combustion closer to stoichiometric to suppress torque fluctuation while limiting catalyst deterioration.

By shifting sun gear load support and relocating the terminal block, this layout cuts axial size without sacrificing power transmission.

A shared bearing layout constrains a vehicle drive connecting shaft in both axial directions while reducing bearing count, cost, and structural complexity.

A curved generator-to-inverter harness flexes to absorb engine vibration, protecting the inverter and supporting a more compact hybrid unit.

A radially offset multi-shaft gear layout preserves reduction ratio while creating ball-joint space and reducing suspension bending load.

A controller tracks stall time and torque to derate an electric machine before winding heat causes degradation in vehicle propulsion.

A controller preserves battery charge for 50 mph emergency acceleration while balancing engine use, fuel consumption, and battery life.

Dynamic switching between two high-voltage batteries lets one power the EV while the other recharges, reducing charging waits and extending drive range.

A motor stator linked to the drive shaft rotates relative to the chassis, cutting hybrid powertrain parts while supporting start, idle, forward, and reverse.

An on-board charger converts powertrain and braking energy into controlled charging for vehicles and devices, cutting charging time and external station use.

An axial motor layout with a disconnect clutch and one-way clutch expands P2 hybrid packaging while enabling electric-only and hybrid drive modes.

By running air-fuel ratio sensor and GPF checks in one motoring process when conditions align, this control strategy cuts energy use.

A variable-ratio gear reduction lets a 48V electric machine deliver engine-starting torque in mild hybrid trucks without moving to costlier high-voltage systems.

A mild hybrid control strategy uses current and past driving data to spend excess recuperation energy on engine torque assist and cut fuel use.

When DC-DC converter or charging component faults occur, the vehicle switches low-voltage battery charging to the starter generator to keep moving.

Torque bounds derived from feedforward engine torque prevent double compensation of converter losses and e-motor speed spikes.

Drive-shaft torque and speed feedback lets the engine stay near its efficient operating point while the motor corrects power deviations for stable flight.

An electric machine on the transmission primary shaft fills AMT torque gaps during gear changes, reducing deceleration and torque reversal.

A series battery-capacitor layout boosts front in-wheel motor voltage while cutting current, wiring length, weight, and insulation burden.

When BISG torque cannot fully engage the AC compressor, the controller adds engine torque and adjusts spark timing to avoid speed drop.

Higher rigidity between the charger and power control unit suppresses large vibrations in a vehicle equipment unit.

Pre-engaging the clutch before power source switching keeps front-rear torque split fixed and improves AWD running stability.

Bumper foam and beam form side sound paths that prevent acoustic shorting and improve virtual engine sound output to pedestrians.

A bottom inlet and top outlet use gravity and rotor-induced swirl to cool electric machines in less installation space.

Integrated inverter voltage detection estimates marine battery SOC without extra sensors, improving OCV stability and reducing component count.

A compact hybrid transmission layout places the motor, controller, and power electronics in 3D to cut axial length and save vehicle space.

Integrated case members replace conventional end plates to pack more battery modules while improving impact load distribution and space use.

Speed-based limp-home switching keeps engine drive at higher speeds and uses a second motor for low-speed starts after transmission faults.

A dual-motor planetary driveline uses friction clutches and integrated cooling to cut gear losses, ease packaging, and smooth ratio shifts.

By shifting the HEV engine operating point or stopping the engine, this case reduces powertrain noise and improves voice input and guide clarity.