Hybrid Vehicles TRIZ Cases

A clutch lets the motor carry the driven load so the engine can stay rich long enough for catalyst-based NOx reduction without load swings.

Starter-based engine startup is paired with motor-driven and electric oil pump pressure to keep hybrid clutch engagement controllable.

A transmission-case-mounted resolver detects motor generator speed without a special interlock, saving space, cost, and assembly effort.

Stable travelling zones with normalized input/output energy let machines detect powertrain component deterioration more reliably across varying loads.

A linked clutch switching device coordinates engine and electric motor drive modes in mobile crushers to prevent incorrect changeover and improve reliability.

Housing the coolant pump in the intermediate case keeps a hybrid work vehicle compact while improving motor cooling, assembly, and cost.

An integrated differential, gearset, clutch, and park lock layout cuts drive module size and weight while preserving torque vectoring capability.

Predicted road events drive critical vs non-critical load classification so limited vehicle power is reserved for essential consumers.

Elastic torque release and speed stabilization prevent meshing tooth clashes during 4WD-to-2WD switching, reducing impact and noise.

A changeover switch bypasses a failed DC-DC converter so the starter generator can keep charging the low- or high-voltage battery.

Real-time obstacle, traction, and curvature sensing sets safe torque limits to avoid false triggering while maintaining vehicle propulsion.

Relay switching isolates and parallels load and starter batteries to prevent voltage drops, controller resets, and lamp flicker in hybrid vehicles.

An electric motor and clutch-coupled reverse gear train let heavy motorcycles back up at low speed without engine interference.

A model-based hybrid propulsion controller balances fuel use and NOx by keeping the aftertreatment system hot and effective.

Temperature-based first-motor torque control limits battery input power during engine cranking while preserving usable vehicle speed range.

A radial stack of the damper, clutch, and actuator cuts axial size while preserving torsional filtration and clean clutch actuation.

Automatic rear drive gear switching uses road and driving mode inputs to balance 4WD torque, handling stability, and drag losses.

An ECU selects the most efficient hybrid powertrain operating point to cut fuel use and store excess power in work vehicles.

Accelerator opening and change rate predict driver intent, helping hybrid vehicles avoid delayed or unnecessary engine starts.

Separate clutch and gear paths let two engines share one output shaft, delivering high torque with lower transmission mass and size.

Magnetically actuated coupling lets a filtering pulley switch smoothly between decoupled and torque-transmitting states to cut noise and shocks.

A work machine battery is held at lower charge for longer life, then raised on request to keep enough power when disconnected.

When engine bearing damage is detected, SOC-based limp-home control limits motor and HSG rotation to prevent further degradation and keep the vehicle moving.

Battery recommendations are matched to vehicle load profiles, environment, and driver patterns to improve life prediction and battery fit.

Altitude and descent-speed prediction lets the battery management system derate regenerative charging to prevent overcharge and vehicle power loss.

A clutch disconnects the stalled engine so the hybrid vehicle keeps moving in electric mode while controlled restart logic avoids battery-draining retries.

Altitude and descent-speed prediction derates battery charge power to prevent regenerative overcharging without cutting vehicle power.

Motor-generator switching thresholds change with work lever input, matching engine assist and power generation to real load demand.

Adaptive logic and learning strategies coordinate hybrid propulsion modes and energy recovery to improve efficiency, emissions, and comfort.

By integrating the hydraulic actuator into the transmission support structure, axial space is reduced while preserving clutch actuation and secure mounting.

Catalyst and turbine temperature feedback limits hybrid engine torque and inhibits stops to reduce fuel dilution in engine oil.

Torque-zone control keeps a hybrid EV in parallel mode near motor torque limits, reducing frequent series-parallel switching and efficiency loss.

Adjustable mount stiffness rigidly links a switched-off engine to the sprung mass, cutting noise and vibration during electric driving.

Lowering the downshift point on slippery roads delays rear-wheel regeneration shifts to curb slip and oversteer while preserving energy recovery.

Separating understeer and oversteer torque maps helps recover longitudinal driving force while improving steering stability and response.

Coordinated motor synchronization, lean-burn restart, and cylinder control cut NOx, fuel use, and torque shock during hybrid engine transitions.

A nested electric machine and planetary gear layout adds up to eight hybrid gears while cutting installation space, weight, and power loss.

Capacitor voltage feedback helps distinguish communication instability from precharge failure, enabling accurate fault determination and repair.

Coordinated fuel injection and motor torque control limits catalyst temperature spikes, suppressing ammonia slip while maintaining battery SOC.

Heat from the charging unit warms the crankcase ventilation path before startup, preventing moisture freezing and blockage in cold regions.

During ABS braking on slippery roads, reverse gear engagement shortens stopping distance while preserving steering and stability control.

Directly mounting rotor shaft bearings in the gearbox and clutch housings cuts space and weight while reducing pinion tilting and NVH.

A compact hybrid drivetrain combines engine and electric motor inputs with a selectable differential to widen traction ratios and cut cost.

Regenerative HVDC bus energy is routed to storage, rectifier, or a reversible generator, removing bulky resistive dissipation hardware.

Combining breaker and relay functions in one PDU cuts weight and complexity while arc suppression protects contacts under variable mobile loads.

Driving-state transitions guide engine-motor power split control to cut battery and fuel use in rapidly changing hybrid driving conditions.

Corrected fuel and energy metrics remove load and elevation bias, enabling fair vehicle and driver efficiency comparison.

Selective valve control lets a hybrid engine keep rotating with lower pumping losses, easing motor, clutch, and gearbox integration.

When generator output control fails, raising engine speed enables HV-to-LV power transfer through a DC/DC converter to keep auxiliary devices running.

Pre-charging the battery during driving prepares electrified vehicles for long stay mode without idle charging, reducing noise, smoke, and engine wear.

A separated wet-dry chamber layout keeps the clutch free of liquid contact while using fluid pressure actuation for reliable torque transfer.

Cargo-aware energy control balances fuel cells, storage, braking, and parasitic loads to cut fuel use and extend hybrid truck powertrain life.

Controlled backlash torque turns the drivetrain before launch to suppress oscillations, speed drive-off, and avoid unwanted vehicle motion.

Predicted vehicle speed at clutch engagement helps a hybrid avoid short engine on/off cycles, improving fuel use and driver comfort.

By using electric motor torque reserve during engine speed synchronization, this case smooths eAWD hybrid mode shifts and supports battery recharge.

A three-position sleeve, synchronizer ring, and one-way clutch cut hydraulic losses and axial size in dual-motor hybrid transmissions.

Temperature-based SOC range switching keeps NiMH charge and discharge stable despite voltage-SOC hysteresis and hot/cold performance limits.

Communication checks between engine and HEV ECUs prevent unsynchronized fuel cut-off and motor torque compensation, improving drivability.

By mounting the inverter on the transmission under the floor tunnel, this layout preserves occupant space and supports ergonomic pedal placement.

A triaxial gear layout replaces chain drive to shrink a hybrid drive unit while preserving NV performance and enabling higher torque.

Tracks frequent vehicle mode changes and outputs personalized driving feedback to improve energy-efficient operation and reduce fuel use.

When suspension blocks direct road-noise sensing, wheel angular acceleration and variance can drive adaptive sound volume for quieter cabins.

An ECU coordinates engine speed, pump displacement, and valve position so a forklift can deliver full lift speed from one lever.

A two-sub-transmission layout lets the electric drive machine use low gear ratios while reducing hybrid transmission complexity and space.

A high-voltage Li-ion battery powers the starter machine at −20°C to −30°C, overcoming low-voltage battery output loss and preserving backup power.

A fixed lower-limit engine speed in autonomous stopping reduces speed fluctuations, driver discomfort, and rattle noise in hybrid vehicles.

A stepped planetary gear unit uses two ring-gear shifting elements to deliver a two-speed EV drive with high efficiency and uninterrupted power flow.

Electric machine torque balancing and pre-adjusted intake and EGR conditions enable smooth hybrid engine mode transitions with stable combustion.

A split powertrain lets auxiliary services run independently of propulsion, cutting idle energy waste, emissions, and drivetrain complexity.

A controller estimates hydrocarbon concentration from purge-pump density data to raise fuel vapor purge in turbo and hybrid engines.

A split electric and hybrid drive layout uses selective coupling to uncouple the engine, preserve torque delivery, and reduce clutch complexity.

A mower control mode raises deck motor speed with vehicle speed to maintain lawn quality while cutting fuel and electrical power use.

Battery SOH feedback adjusts genset torque split in a hybrid powertrain to balance vehicle demand, fuel efficiency, and battery life.

An electric motor coupled into a 2×3×2 hybrid AMT fills shift torque gaps and enables full power-shift across gear and range changes.

An electrically heated catalyst absorbs excess regenerative energy to prevent battery overcharge while preserving hybrid vehicle deceleration.

Sensors detect nearby pedestrians and adjust vehicle sound frequency and volume to improve awareness without continuous noise output.

Individual battery testing and database-based matching rebuild used EV packs with balanced performance, longer life, and lower maintenance cost.

A stepped planetary gearset links either sun gear to the motor for seamless two-speed EV shifting, high efficiency, and lower axial space.

An epicyclic differential lock balances wheel speed differences in turns with equal torque delivery on slippery surfaces for better traction.

AER-threshold mode switching limits unnecessary range-extender engine use, preserving electric-only driving while meeting incentive criteria.

Field-oriented motor control coordinates shift drum motion and torque reduction to limit impact loads, overshoot, and wear during gear changes.

Electric clutches, brakes, and dual gearsets replace hydraulic friction to manage multi-input torque while enabling hill-hold and park.

Cold-start torque is estimated from engine speed and air flow so ISG torque can be limited to prevent rotation stoppage and improve combustion.

A baffle-guided gear pump circulates transmission oil between secondary and main sumps, cutting pump count while cooling the motor and main pump.

A stepped pulley structure blocks cavity sound waves between the belt pulley and torsional vibration damper to suppress abnormal engine noise.

Temperature-triggered mode switching and coolant pumping limit swivel output to prevent overheating in hybrid shovel drive components.

Dynamic engine load threshold adjustment reduces soot generation when filter accumulation is low, maintaining power output while improving trapping efficiency.

A controller system optimizes hybrid powertrains by predicting driving conditions and catalyst temperatures to manage engine and motor operation.

Automated EV line setting uses climbing angle and creep power to define operational boundaries without manual mapping.

A hybrid vehicle diagnostic system monitors battery voltage via a transistor-controlled relay to verify circuit integrity.

Controller adjusts torque source speed to match transmission input shaft velocity, eliminating driveline torque disturbances and clutch wear.

A hybrid powertrain uses a center synchronizing unit to interrupt the connection between the engine input shaft and the motor input shaft.

Holding hydraulic systems maintain clutch engagement via an electric oil pump, enabling continued driving after electronic transmission control failure.

Predicts transmission input shaft speed to adjust actuators, compensating for degradation that delays friction brake response.

Variable pricing rules in vehicle energy management systems coordinate auxiliary system activation agents to reduce fuel consumption from sub-optimized control.

Preliminary charging action raises state of charge above threshold before enabling motor running, preventing power shortages during keeping mode.

Microcontroller detects analog converter faults and increases operational speed of functioning fans to prevent overheating.