Rotary Engine Fixed Center Member Reduces Centripetal Forces

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Solution Overview

Problem

Prior rotary engines face limitations due to increasing centripetal forces as RPM increases, causing vane displacement and seal imbalance, which restricts speed and leads to friction and sealing failures.

Innovation Solution

A rotary engine design featuring a rotating housing and undulating cam surfaces with a fixed member between them, allowing the housing to rotate with the cams and reducing centripetal forces by using slidable vanes within axial slots, enabling efficient rotation and fluid manipulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If the rotor and vanes rotate at high RPM in prior rotary engines, then power output increases, but centripetal forces push vanes outward causing seal imbalance and friction failures

Engineering Contradiction:

Improvepower outputVSAvoidseal balance and friction resistance

Core Design Contradiction:

PowerVSReliability

Solution Approach 1:

The patent inverts the conventional rotary engine configuration by making the housing rotate with the cams while keeping the member fixed. This reversal transfers the rotation from the vanes to the housing, eliminating the harmful centripetal forces that previously pushed vanes outward at high RPM and caused seal failures

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent changes the operational parameters by allowing the housing to rotate at controlled speeds while maintaining the fixed member stationary. This parameter change enables the system to operate at higher effective RPM without the vanes experiencing destabilizing centripetal forces, thus improving reliability

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the housing rotates with the cams, then centripetal forces on vanes are reduced, but the device complexity increases due to the rotating housing mechanism

Engineering Contradiction:

Improvevane stabilityVSAvoidrotating housing mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the housing rotation with the cam rotation, so that the housing rotates together with the cams as a unified assembly. This combination simplifies the overall mechanism by eliminating the need for separate vane rotation mechanisms while still achieving the benefit of reduced centripetal forces on the vanes

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10662774B2Prime mover assembly having fixed center member between rotating members

Publication Date: 2020.05.26 REGI U S

AI summary

Prime movers are provided that can include: a pair of cylindrical members about a center rod, a fixed member about the center rod between the pair of cylindrical members; wherein the pair of cylindrical members rotate with the center rod in relation to the fixed member; a housing extending between the cylindrical members; and a plurality of chambers between the opposing bases of the cylindrical members and the fixed member. Methods for rotating members in relation to a fixed member are also provided. The methods can include rotating a pair of cylindrical members in relation to a fixed member about a center rod along a shared axis within a housing extending between the pair of cylindrical members.