Reciprocating Piston Engines TRIZ Cases

A gearshaft and rodrack assembly keeps linear speed more constant to smooth torque, cut pulsation, and improve frac pump efficiency.

Axial magnet placement on a composite piston boosts flux through generator windings while simplifying pre-assembly and reducing stress.

A geared double-eccentric piston mechanism creates unequal stroke lengths and dead centers to enable Atkinson-cycle efficiency in four-stroke engines.

Angled piston heads distribute combustion forces while two cylinder banks support longer strokes, high speed, and lower heat loss.

A segmented swash plate design with a central drive shaft passage and rotative ring assembly.

Cam mechanisms extend piston dwell time at top dead center to ensure complete combustion and reduce energy loss.

Double conical bushings on a spherical cam maintain stable line contact, eliminating sliding friction and reducing bending stresses in swinging arms.

A piston rotation generation assembly converts linear reciprocation into rotary shaft motion through mated surface geometry.

Elastic leaf springs in the crankshaft absorb flexion while hydraulic pistons adjust compression ratios, reducing lateral friction and material stress.

Alternating dual gear rack teeth mesh with a central pinion to maintain torque transmission through top-dead-center positions, eliminating dead spots.

A spacer links pistons in parallel cylinders to a crankshaft lifter, reducing transverse forces and improving combustion efficiency.

Segmented drive piston and nested boost sleeve manage fluid pressure to improve engine performance while reducing device complexity.

Segmented installation tools with journal cutouts enable crankcase access, reducing assembly time and wear.

A regenerator-free heat engine uses interconnected piston assemblies to drive a working fluid cycle for compact thermal energy conversion.

A polymer spring guide prevents corrosion cell formation between dissimilar metals in pneumatic brake actuators.

Segmented cylinders around a circular gear assembly generate high torque while minimizing system complexity and pollution.

Extraction of the adjustment mechanism via access holes simplifies nut access while segmentation reduces inertial forces and wear.

A hydraulic motor uses a movable spool to switch between series and parallel fluid pathways within an integrated casing design.

Staggered cylinder arrangement distributes pistons across multiple planes to maximize slipper bearing contact area on the crankshaft throw.

A segmented connecting rod mechanism with an oscillating rocker alters piston kinematics to enhance mechanical efficiency.

A concentric inner ring creates a restraining path that confines support bearings, preventing disengagement during high-speed rotation.

Segmented tubular cams guide pistons through independent grooves, eliminating micro strokes and reducing vibration in piston cam engines.

A gear rack reciprocates with the piston to engage a crankshaft gear via a one-way drive mechanism.

A modular opposed piston engine uses segmented cylinder housings to support multiple crankshafts and pistons.

A rack and pinion gear power take-off mechanism converts linear piston motion into rotational drive shaft movement via direct mechanical engagement.

Opposed piston engine design eliminates superchargers by using piston movement to self-supercharge air, reducing device complexity and weight.

External induction separates mixture delivery from the compact piston assembly, resolving efficiency trade-offs in opposing piston engines.

Gear coordination synchronizes opposed pistons to compress fuel, resolving the trade-off between combustion efficiency and mechanical complexity.

Dynamic engagement profiles with multiple teeth transfer power over a greater portion of the drive stroke, reducing wear on contact surfaces.