Oval-Gear Piston Engine Layout for Balanced Motion Conversion
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Solution Overview
Problem
Existing epicyclic gear piston machines face inefficiencies due to imbalance caused by steering rods, high lateral forces, and geometric limitations, which hinder continuous operation and increase costs.
Innovation Solution
An epicyclic gear piston machine design utilizing a planetary gear system with oval gears and a counterweight to balance rotating mass, eliminating the need for complex crank mechanisms and allowing efficient conversion of rotary motion to reciprocating motion without the drawbacks of traditional crankshafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a crank mechanism is used to convert continuous rotary motion into reciprocating motion, then the motion conversion is achieved, but imbalance is created by the connecting rods as part of the rotating mass
Solution Approach 1:
The patent applies counterweights to balance the rotating mass of the connecting rods and other moving components. The counterweights are strategically positioned to offset the centrifugal forces generated by the reciprocating motion, thereby reducing vibration and imbalance while maintaining the motion conversion function.
Solution Approach 2:
The crank mechanism is segmented into separate functional components: the crankshaft for rotation, connecting rods for force transmission, and counterweights for balance. This segmentation allows each component to be optimized independently, with the counterweights specifically designed to address the imbalance problem without interfering with the motion conversion function.
2Stability of the object's composition
If multiple crank mechanisms are added to improve smoothness, then operational smoothness is improved, but device complexity increases
Solution Approach 1:
Instead of adding multiple crank mechanisms, the patent uses counterweights attached to the existing crankshaft to achieve smooth operation. The counterweights balance the inertial forces of the reciprocating components, providing operational smoothness without increasing the number of crank mechanisms or overall system complexity.
3Speed
If a technically necessary connecting rod ratio is used, then motion transmission is achieved, but large lateral force is generated on the linearly guided assembly
Solution Approach 1:
The patent employs dynamically optimized connecting rod ratios and crank angles that vary during the operating cycle. By adjusting the geometry dynamically, the system achieves effective motion transmission while minimizing lateral forces on the piston and cylinder assembly through optimized force distribution.
4Productivity
If geometric overlap of crank operating range with piston range is implemented, then efficiency is improved, but control-engineered manipulation becomes difficult
Solution Approach 1:
The patent uses dynamically adjustable mechanisms that allow the crank and piston geometry to be optimized for efficiency during operation, while maintaining ease of control through engineered adjustment systems. The dynamic design enables geometric overlap for improved efficiency without sacrificing controllability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves balanced operation, reduced lateral forces, and enhanced efficiency by using a counterweight to balance rotating mass, enabling continuous motion conversion with lower production costs and improved geometric compatibility.
Implementation Method 1
The rotary piston machine consists of two pairs of oval gears. A first gear pair (3, 6) is arranged on the central axis of motion (2), and at least a second gear pair (4, 5) is located on a track (7) around the gears (3, 6)... The elliptical gears (3; 4; 5; 6) of the rotary piston engine are frictionally engaged... with the at least two off-center gears (4; 5) arranged in a rotating manner on a path (7) around the at least two central gears (3; 6)
Data Source
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AI summary
The invention relates to a rotary gear piston machine usable as both a power machine and a working machine, comprising a rotary gear and a lever system in which the rotary axis and lever axis are mounted centrally, the rotary gear consisting of two gears in the center which are rotated by at least two gears on a defined circular path with a constant diameter, wherein the gears are two pairs of the same size and have an elliptical shape, the rotary gear generates an oscillating lever movement with a relative movement which, with an attached push-pull rod, moves a working piston linearly in a bushing, which, depending on the embodiment, power or working machine, is used primarily or secondarily with respect to the rotational speed of the rotary gear in conjunction with an input/output shaft.