Ignition Piston Relief Valve Compression Ignition

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Solution Overview

Problem

Internal combustion engines with traditional spark plugs or injectors face inefficiencies in igniting air-fuel mixtures, particularly in designs with two parallel pistons operating in different cylinders, where timing and pressure distribution are critical for optimal combustion.

Innovation Solution

A design featuring a smaller ignition piston compressing the air-fuel mixture to open a relief valve, which transfers high-pressure combustion to a larger piston's combustion chamber, igniting the mixture without a spark plug or injector, utilizing a unique conrod design and a timing mechanism involving a relief valve and camshaft to control ignition timing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a relief valve is used to transfer combustion pressure from the small piston to the large piston, then ignition of the air-fuel mixture is achieved without spark plugs or injectors, but the device complexity increases due to additional components

Engineering Contradiction:
Improveignition system simplicityVSAvoidrelief valve mechanism complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The invention extracts the ignition function from traditional spark plugs or injectors and relocates it to the relief valve mechanism. The high-pressure combustion gases from the small piston are directed through the relief valve to ignite the air-fuel mixture in the large piston's combustion chamber, eliminating the need for separate ignition components.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The relief valve serves multiple functions: it acts as a pressure relief mechanism for the small piston, a transfer conduit for combustion energy, and an ignition source for the large piston. This multi-functionality reduces the overall component count despite the complexity of the valve mechanism itself.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Productivity

If the small piston compresses the air-fuel mixture to combustion before top dead center, then efficient combustion is achieved, but precombustion may occur if timing is not precisely controlled

Engineering Contradiction:
Improvecombustion efficiencyVSAvoidcombustion timing control
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The relief valve mechanism incorporates a pressure-sensitive feedback system where the valve opens automatically when the compression pressure in the small piston reaches a predetermined threshold. This feedback control ensures that ignition occurs at the optimal moment during the compression stroke, preventing both precombustion and late ignition.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The invention utilizes changes in pressure parameters as the primary control mechanism. The relief valve is calibrated to open at a specific pressure threshold during compression, which corresponds to the optimal ignition timing. This parameter-based control allows precise timing without complex mechanical timing mechanisms.

Inventive Principle:
Principle #35Parameter changes

3Force

If the conrod design places torque past top dead center, then the down thrust of the conrod is supported by the thrust rod, but the structural complexity increases with additional support components

Engineering Contradiction:
Improvetorque application timingVSAvoidconrod support structure complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The conrod support structure is segmented into distinct functional components: the conrod itself for torque transmission, and the thrust rod for vertical support. This segmentation allows each component to be optimized for its specific function while reducing the overall complexity compared to a monolithic support structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The thrust rod acts as an intermediary component between the conrod and the engine block. It mediates the vertical down thrust forces generated by the conrod's torque application past top dead center, distributing these forces to the engine block without requiring direct structural integration between the conrod and block.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution enables efficient combustion and ignition of the air-fuel mixture, optimizing engine performance by ensuring precise timing and pressure transfer between pistons, enhancing fuel efficiency and reducing precombustion issues.

Implementation Method 1

the smaller ignition piston 1 is compressing the air-fuel mixture to combustion

Methodology Applied
Scientific EffectCompression heating: Adiabatic Heating

Implementation Method 2

the high pressured burning air fuel mixture is forced into the lower pressure large piston combustion chamber 9

Methodology Applied
Scientific EffectPressure-driven flow: Pressure Gradient

Data Source

PatentUS20210277819A1Ignition piston
Publication Date: 2021.09.09 BLOOMQUIST VICTOR RUDOLPH
  • US20210277819A1 patent drawing
  • US20210277819A1 patent drawing
  • US20210277819A1 patent drawing

AI summary

The ability of the ignition piston engine is to use the disel technic of igniting the fuel air mixture by compression with out using an injector. The ignition piston engine can burn a leaner air fuel mixture than any other engine there by giving a cleaner exhaust and more economy. The ignition piston engine can burn any type of fuel that flows in air and is combustable by heat; like gasolene, diesel, propane, natural gas, and kerosene in any desired air fuel mix. And it can do it with out using a spark plug.