Monoblock Opposed Piston Engine Port Control
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Solution Overview
Problem
Existing internal combustion engines face challenges in achieving optimal fuel efficiency and power production, as they often require complex valve systems, multiple crankshafts, and inefficient energy transfer, leading to reduced performance and increased mechanical complexity.
Innovation Solution
A five-stroke internal combustion engine design featuring opposed piston pairs in a monoblock configuration, where each cylinder completes a full cycle per crankshaft rotation, eliminating the need for traditional valves and using pistons to control intake and exhaust ports, and connecting crankshafts via gears or connecting bars to optimize energy transfer and combustion efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional valve systems and multiple crankshafts are used, then engine operation can be maintained, but mechanical complexity increases and fuel efficiency decreases
Solution Approach 1:
The patent removes the valve system from the engine design, eliminating intake and exhaust valves that are traditionally used to control fuel and exhaust flow. Instead, the piston itself performs the valving function by positioning ports open or closed during its stroke, thereby reducing mechanical complexity while maintaining engine operation
Solution Approach 2:
The piston is designed to perform multiple functions simultaneously: it acts as both a moving component that converts combustion energy to mechanical work and as a valving mechanism that controls fuel intake and exhaust release. This multi-functionality eliminates the need for separate valve components, reducing overall device complexity
2Power
If traditional four-stroke cycle is used, then engine operation is stable, but power production per rotation is reduced
Solution Approach 1:
The engine operates on a five-stroke cycle that repeats periodically, with each stroke representing a distinct phase of operation (intake, compression, power, exhaust, and a additional stroke for optimized timing). This periodic five-stroke action allows for more frequent power deliveries compared to the traditional four-stroke cycle, increasing power production without requiring additional time per cycle
Solution Approach 2:
The five-stroke cycle design ensures that useful work is performed more continuously by optimizing the timing and duration of each stroke. The additional stroke enables better overlap and transition between operations, reducing idle time and maintaining continuous productive action throughout the rotation cycle
3Use of energy by moving object
If opposed piston pairs are used, then fuel efficiency improves, but control of port timing becomes more complex
Solution Approach 1:
The opposed piston pairs automatically control port timing through their own motion. As the pistons move up and down the cylinder, they inherently open and close the intake and exhaust ports at the appropriate moments without requiring external control mechanisms. The piston position itself determines port status, making the system self-regulating and improving fuel efficiency while avoiding additional complexity
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
This design enhances fuel efficiency and power production by allowing precise control of fuel intake and exhaust, reducing mechanical complexity, and increasing the useful work done per crankshaft rotation, resulting in improved performance and longer engine life.
Implementation Method 1
combustion chamber for burning, exploding, igniting, etc. fuel
Implementation Method 2
single explosion in the chamber to drive both pistons in opposite directions simultaneously
Implementation Method 3
compression; explosion
Data Source
Figure 1(A)~1(B)
Figure 2(A)~2(C)
Figure 2(D)~2(F)
AI summary
The present invention provides an internal combustion engine that provides advantages of both typical 2-stroke engines and typical 4-stroke engines, but using a new design unlike either. The present engine provides for use of pistons as means for opening and closing intake and exhaust ports disposed on cylinder walls. It also provides two pistons per cylinder in an opposing configuration, such that one fuel explosion event causes motion of both pistons per cylinder, in opposite directions. Each piston of a cylinder is connected to a separate crankshaft, which completes a single revolution about its axis per fuel explosion event in a cylinder. In a single cycle of piston movement along the cylinder, a full cycle of ignition, exhaust, intake, and compression is achieved.