Opposed Piston Engine Dynamic Cam Attachment
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Solution Overview
Problem
Existing opposed piston engines are expensive, have high fuel consumption, and poor performance, making them inefficient and costly to manufacture, especially when producing engines with different characteristics.
Innovation Solution
A three-stroke, twin cylinder opposed piston engine design with rotating power cams and a dynamic attachment device that allows for simultaneous variation of engine distribution and compression ratio, optimizing intake and exhaust port opening and closing based on engine requirements, reducing side loads, and improving torque and fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional opposed piston engines are designed with fixed configuration, then manufacturing is simplified, but adaptability to different engine characteristics is reduced and fuel consumption increases
Solution Approach 1:
The patent implements a dynamic attachment device that can shift the relative position between power cams and cylinders during operation, allowing the engine to change its configuration from inline to V-arrangement. This dynamic adaptability enables the same engine to operate in different modes (different characteristics) without requiring multiple fixed-configured engines, thereby resolving the contradiction between adaptability and complexity.
2Force
If power cams are positioned far from cylinders, then side loads are reduced, but engine distribution and compression ratio cannot be optimized
Solution Approach 1:
The dynamic attachment device allows the power cams to be positioned at optimal distances from cylinders during different operational phases. During normal operation, cams can be positioned closer for optimized engine distribution and compression ratio, while during certain strokes they can be positioned farther to reduce side loads. This dynamic positioning resolves the contradiction between force reduction and adaptability.
Solution Approach 2:
The dynamic attachment device acts as an intermediary mechanism between the power cams and cylinders, enabling flexible positioning that balances side load reduction with optimization of engine distribution and compression ratio. This mediator allows the system to achieve both contradictory goals at different times during the engine cycle.
3Reliability
If multiple fixed-configured engines are manufactured for different characteristics, then each engine is optimized for its specific application, but manufacturing cost increases
Solution Approach 1:
The patent creates a universal engine platform with a dynamic attachment device that can configure the engine for different characteristics (inline, V-arrangement, different compression ratios) during operation. This single multi-functional engine replaces the need to manufacture multiple specialized fixed-configured engines, thereby reducing manufacturing costs while maintaining performance optimization through dynamic reconfiguration.
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 engine achieves higher torque and power over a wide range of engine speeds with reduced fuel consumption and pollutants, while being cost-effective and adaptable to various engine characteristics.
Implementation Method 1
at least first and second mutually opposed power cams (300, 400) are provided inside the engine block... Each of the power cams is connected to or is part of respective opposite ends of the first and second rotary shafts (500, 600)... reciprocation of pistons results in rotary motion of the main shaft
Implementation Method 2
Two opposed pistons generally form a combustion chamber. When combustion takes place therein the gases act against both pistons driving them in opposite directions
Implementation Method 3
the top of the intake cam track which is considered as the highest point is taken as reference for ignition of the spark plug in petrol engines... During the compression step the fuel is injected into the cylinder
Data Source
AI summary
It comprises one or more cylinders with pistons therein and mutually opposed power cams connected to respective first and second rotary shafts. The reciprocating pistons act on the power cams to impart a rotating motion to the rotary shafts. An attachment device is provided for connecting the rotary shafts to each other. The attachment device includes a shifting device for changing the relative angular position of the first and second rotary shafts. The result is engine distribution and compression ratio are changed dynamically.