Piston engine

The piston engine design addresses displacement and torque limitations by allowing variable piston stroke length and balancing radial forces, achieving high torque and compact dimensions with self-braking capabilities.

RU2865740C1Active Publication Date: 2026-07-08CLOSED TECH MARKET
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Patent Information

Application Number
RU2025124504
Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
Filing Date
2025-09-05
Publication Date
2026-07-08
Estimated Expiration
2045-09-05

AI Technical Summary

Technical Problem

Existing piston engines face limitations in displacement and torque generation due to restrictions on piston stroke length and diameter, leading to increased weight and dimensions, and they often suffer from radial and axial forces that complicate torque enhancement.

Method used

The piston engine design allows for a variable piston stroke length determined by the cylinder block length, with piston rods interacting through a cam follower with a smoothly varying cross-section, and incorporates a mechanism that balances radial forces, enabling high torque generation without increasing engine dimensions.

Benefits of technology

The engine achieves high torque with compact dimensions by eliminating restrictions on piston stroke length and incorporating self-braking properties, reducing weight-to-size ratios and enhancing torque generation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

FIELD: engine building.SUBSTANCE: piston engine comprises a cylinder block (1) with pistons (3) and rods (4) and cams (56, 60) with periodic cycloidal surfaces. During the sequential reciprocating motion of the pistons (3), the rods (4) interact with the copiers (56, 60), converting the reciprocating motion of the pistons (3) into the rotational motion of the driven shaft (10). To increase the working volume of the engine without increasing its dimensions, the rods (4) interact with the copiers (56, 60) with their side surface (59), and are made with a cross-section that smoothly changes along the length. The movement of the rods (4) causes a force to appear acting on the cams (56, 60) in a direction perpendicular to the movement of the rods (4). Thanks to this, the restrictions on the piston stroke (3) are removed, which is now determined only by the length of the cylinders. If the angle of inclination of the side surface of the rod (4) to its axis is made smaller than the sum of the friction angles between the rod (4) and the copiers (56, 60), then the engine acquires the property of self-braking.EFFECT: creating a high-torque piston engine of small dimensions.15 cl, 17 dwg
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Citation Information

Patent Citations

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