Hybrid Vehicles TRIZ Cases

A compact hybrid drivetrain uses shared transmission paths and selector actuators to switch thermal, electric, and hybrid torque modes.

Pre-reducing motor torque and slipping the clutch lets a hybrid start the engine with less deceleration during mode switching.

Engine-off standby and rollout modes use stored battery energy to drive accessories or axles, cutting response time and fuel use.

Route-segment power prediction and SoE reference trajectories help hybrid vehicles balance electric and combustion use with low control-unit load.

Switchable stator windings and adjustable magnetic flux keep a motor-generator efficient across wide RPM and torque changes.

Driving force is reduced when low-emission battery power is scarce, prompting greener charging while limiting excess power use.

Selective clutch engagement lets one motor switch between battery charging and pump drive, improving power distribution efficiency in electrified vehicles.

An electronically controlled positive clutch replaces bulky friction clutches to smooth hybrid launch, shifting, engine starts, and mode transitions.

A nested generator-within-flywheel layout cuts hybrid powertrain width and volume while preserving motor, engine, and transmission functions.

Topography-based path planning sets segment SOC targets and regenerative downhill modes to keep hybrid battery charge stable across a route.

Torque-limited engine start-up with surplus urea dosing heats the hybrid SCR quickly, cutting cold-start NOx without oversized hardware.

Closed-loop ISG and engine control stabilizes the DC bus after battery failure, allowing the traction motor to keep driving safely.

A compact flywheel-side differential layout shortens half-shaft length differences to reduce driveline noise, vibration, and handling imbalance.

An upstream switching dog clutch separates engine drive from the transmission path, enabling smoother EV mode changes with lower energy loss.

During gear changes, electrical torque transfer between two motors maintains wheel traction, reduces driveline load, and improves comfort.

A single housing for the motor, generator, reduction gear, and engine drive path suppresses resonance, cuts size, and reduces torsional vibration.

Coordinated motor torque control matches output shaft speed during disconnect shifts, enabling smoother low-range engagement without shift bumps.

AI converts charging, driving, and parking habits into a battery management score that predicts lifespan and flags abnormal behavior.

Different execution rates for active and inactive vehicle subsystems cut hybrid control processor overload without hurting drivability.

A parallel hybrid powertrain combines an engine, motor/generator, and transmission to enable silent drive, battery charging, and full-power operation.

An engine-integrated motor-generator layout removes the transmission and differential to cut hybrid cost, energy loss, and emissions.

Magnetic dust collection in the torsion damper fluid path keeps wear particles away from hybrid motors and transmissions, improving durability and fuel economy.

Differential torque at the two steering wheels improves three-wheel cornering stability and agility using speed, handlebar angle, and rider torque.

Positive-pressure oil fed through an axial conduit lubricates planetary pinion bearings while reducing sealing losses in hybrid transmissions.

Parallel motor-generator placement shortens the hybrid transmission, avoids clutch-driven layout limits, and reduces self-load.

Pre-stored safety torque limits let the controller handle power source failures by matching torque to driving risk and avoiding abrupt torque loss.

Using a grid box to absorb extra generator power raises exhaust temperature for purifier cleaning without added batteries, muffler resistors, or weight.

Temperature-based mode switching adjusts engine load and injection timing during hybrid cold starts to cut particulate emissions and fuel loss.

When a target gear is unavailable, the vehicle switches drive mode and selects an available gear to maintain power and prevent stalling.

When wheel slip is detected on low-adhesion roads, the vehicle shifts from series mode to idle electric four-wheel drive to improve escape performance.

Oil scraped by a rotating body is routed through a partition-wall passage to a shaft bearing, avoiding pump drive losses in vehicle transmissions.

Temperature-based battery reserve thresholds let a hybrid stay in pure electric mode longer while keeping enough energy for vehicle demand.

Lowering the engine speed target during downshift deceleration cuts first-motor power use and helps prevent battery undercharging.

Supplemental torque based on speed and performance class improves hill starts, towing launch feel, and traction without added hardware.

Placing the electric machine below the swingarm and linking it to the secondary transmission improves stability, electric drive, and regenerative control.

A coaxial shift drum and cam layout lets one drive source switch two engagement devices, cutting hybrid drive size and actuator complexity.

Actuator-guided shifter pathways add tactile feedback in EVs while combining gear selection and drive mode switching in one control assembly.

Axial rotor movement uses magnetic force to preload meshing gears, cutting backlash-driven gear rattle in vehicle drive paths.

A controller shifts engine-electric power split and reductant dosing using well-to-wheel emissions thresholds to cut total emissions.

Routes vehicles to hydrogen stations using well-to-wheel emissions thresholds, cutting total emissions while limiting refueling compliance gaps.

Electric motor speed setpoint changes enable engine position confirmation and reliable hybrid startup when the camshaft signal fails.

A brake moved off the planetary axis cuts axial size and brake torque, enabling compact dual-motor BEV drive operation.

Calculating fuel entry and evaporation in hybrid engine oil enables runtime changes that limit dilution, wear, and service disruption.

When oil is cold, inhibiting engine stop in a hybrid vehicle helps evaporate fuel from the oil, reducing wear and extending service intervals.

Preheating emission-relevant loads from the vehicle battery before engine start helps meet emissions targets while avoiding high-voltage precharge losses.

Pulse modulation control decouples engine, motor, and battery operation to cut heavy-truck fuel use and keep NOx emissions compliant.

A dual-battery vehicle control case that blocks idling stop at high Li-Ion temperature to protect automatic driving power reliability.

Alternating capacitor series-parallel switching generates ripple current to warm secondary batteries efficiently and protect charging performance.

Limits downhill deceleration when fuel cut is restricted, reducing motor load, filter overheating, and driver confusion.

Dynamic gear selection uses battery charge, vehicle load, rolling resistance, and slope to prevent hybrid vehicle run-away and overcharge.

Surrounding elevation data sets battery charge targets in a fuel cell EV, balancing uphill power demand and downhill recuperation.

By detecting whether the engine clutch failed open or closed, the controller switches EV, HEV, and charging modes to extend safe driving range.

Dynamic motor speed correction applies opposing torque during lock release on slopes to damp powertrain oscillations and avoid shocks.

A front P2 and rear P4 motor layout gives hybrid vehicles AWD capability while cutting EVT cost, weight, and packaging space.

Rotational speed synchronization enables reliable shaft engagement when switching a vehicle drive device from 2WD to 4WD.

Software torque coordination between engine and e-motor enables all-wheel-drive creep without a transfer box, improving launch traction and slip control.

Online Kalman-filter adaptation updates torque converter parameters from slip and speed data to improve hybrid powertrain torque accuracy.

Real-time trip length and battery energy estimation adjust engine and electric drive split to avoid depletion and improve HEV fuel economy.

Engine heat warms the passenger compartment quickly while idle and generator control prevent battery overcharge, noise, and instability.

Route-aware battery charge control predicts future propulsion and braking demand to cut fuel use while preserving engine output stability.

Historical route patterns guide HEV engine activation to improve battery charging, cut noise, and reduce fuel use under real-time driving conditions.

During deceleration, SOC-based switching between engine combustion and regeneration keeps the catalyst hot without overcharging the battery.

A coaxial generator-motor layout cuts hybrid drivetrain packaging space by removing intermediate clutches and torque links.

By using one motor generator to power the other, this hybrid transmission avoids large batteries while simplifying the work vehicle layout.

An independent power distribution shaft shortens motor transmission paths in hybrid vehicles, improving packaging and efficiency.

Mode switching between front and rear drive units widens force distribution under low-speed and battery charge constraints.

Adaptive engine-motor control switches among drive and charging modes to improve utility vehicle efficiency across terrain and load conditions.

Higher target idle speed in circuit mode improves driver recognition while gradual speed changes preserve comfort and vehicle performance.

Controllable mechanical diodes keep power flowing during 2-speed vehicle transmission shifts, enabling fast forward-reverse changes with less clutch complexity.

A rotor coupled directly to the gearbox input shaft enables compact multi-gear hybrid torque transfer with better drivability and energy efficiency.

Path-aware motion optimization balances regenerative braking energy savings against tyre wear to keep total driving cost below a threshold.

An offset three-axis layout separates the motor, differential gear, and clutch to shrink vehicle drive axial length.

Timed activation of a secondary oil pump enables state diagnosis after engine start without unnecessary pump operation that can disturb the driver.

Model predictive steering control estimates yaw rate and sideslip from existing sensors to improve vehicle stability and handling.

Sensor-driven prediction starts SoC cooling before autonomous driving loads raise temperature, preventing overheating and excess energy use.

Using specific inverter switching modes, this case estimates battery current from one sensor signal to avoid multi-sensor error buildup and support fault diagnosis.

Two electric machines split tractor traction and PTO power paths to support flexible energy sources while saving installation space.

RFID-linked battery power management coordinates charging access, alerts, and multi-mode recharging to keep EVs running during range limits or grid failures.

Torque gradient limiting and first-order filtering stabilize hybrid powertrain operating points despite phase differences in consumption models.

Two sensor power sources keep key current sensing available after a failure, reducing converter weight, size, and cost while preserving limp-home control.

At high altitude, motor driving force is limited by an altitude-based map to preserve battery SOC and extend series hybrid travel distance.

A radial motor-generator layout with a one-way clutch cuts axial size in hybrid power transmission while preserving efficient, reliable drive.

Terrain-based torque-speed control keeps vehicle creep speed steady on gradients and low-friction surfaces while reducing wheel slip.

Near a stored parking location, the vehicle switches to engine drive to charge batteries and avoid voltage drop or restart failure after parking.

Route-aware engine on/off planning uses battery state and predicted regenerative braking to cut fuel use and noise in hybrid vehicles.

Uphill timing detection shifts drive output from motor to engine gradually, limiting catalyst temperature spikes and ammonia desorption.

A three-stage V-belt and chain CVT in the swing arm improves launch torque, saves space, and simplifies hybrid-to-EV conversion.

An auxiliary magnet inside a wound-field motor sustains magnetic flux during rotor power interruptions, avoiding slip-ring instability.

Motor torque is adjusted from speed differences during engine clutch lock-up to limit DMF spring torsion and prevent malfunctions.

Restricting automatic transmission shifts during motor-only limp-home running cuts electric power use and helps extend vehicle cruising distance.

Waste heat from an ICE range extender is redirected through heat exchangers to warm the EV battery before charging or cold-weather use.

When bucket fill raises torque converter slip, stored energy is discharged to the drive shaft to cut losses and improve fuel efficiency.

A galvanically isolated 12V/48V ECU on one PCB cuts space and cost while enabling low-latency data transfer and pre-48V diagnostics.

Uses towing-wheel slip and expected slip to control trailer drive torque without extra sensors, reducing push-pull effects and cost.

A trained autoencoder flags whether EV battery range is adequate for the trip, reducing range anxiety without heavy real-time computation.

Non-conductive radial barriers keep rotor coil ends spaced from covers under centrifugal force and heat, reducing cracks and insulation risk.

Automatic regenerative intensity adjustment uses driving context and battery state to improve one-pedal control at higher speeds.

Closing engine valves during hybrid overrun braking blocks air from the exhaust, avoiding catalyst oxygen buildup, NOx spikes, and fuel burnoff.

Mode-dependent torque reduction timed to drive-system resonance suppresses vibration at accelerator-off without sacrificing torque response.

A hybrid drive method determines slip torque using the internal combustion engine output shaft speed curve for precise control.

A catalyst temperature control system anticipates vehicle starts to activate an electrically heated catalyst before engine ignition.

Dual torque models estimate engine capacity from intake pressure and air mass, resolving accuracy limits of single-model approaches.

A charging control apparatus predicts energy costs and battery lifetime to guide user selection of charge levels.