Elastic Intake Adapter Partition for Internal Combustion Engine

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Solution Overview

Problem

Existing internal combustion engines with separate conduits or tubes for mixture and air channels are complex, costly, and require more material and installation space, while also facing challenges in fuel separation and emission control.

Innovation Solution

An internal combustion engine with an elastic intake adapter that divides the intake channel into a mixture channel and a supply channel using a partition, allowing for a straightforward configuration and production, with the partition being stabilized by a support ring or reinforcement plate to prevent fuel leakage and emission issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate conduits or tubes are used for mixture channel and air channel, then fuel separation is improved, but device complexity and material expenditure increase

Engineering Contradiction:

Improvefuel separationVSAvoidconduit configuration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the mixture channel and air channel into a single conduit that is divided into two separate flow paths by a partition. This merging approach reduces the number of separate components (from two separate tubes to one divided conduit) while maintaining effective fuel separation through the partition structure, thereby resolving the contradiction between reliability and device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single conduit is segmented into two distinct flow paths (mixture channel and air channel) by introducing a partition. This segmentation allows the system to achieve effective fuel separation while using fewer materials and components than two separate conduits would require, addressing both the reliability and complexity aspects of the contradiction.

Inventive Principle:

Principle #1Segmentation

2Reliability

If separate conduits or tubes are used for mixture channel and air channel, then fuel separation is improved, but material expenditure and weight increase

Engineering Contradiction:

Improvefuel separationVSAvoidintake adapter weight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent merges the mixture channel and air channel into a single conduit structure with an internal partition, eliminating the need for two separate tubes. This reduction in the number of components directly decreases material expenditure and weight while maintaining effective fuel separation through the partition, resolving the contradiction between reliability and weight.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If separate conduits or tubes are used for mixture channel and air channel, then fuel separation is improved, but installation space requirement increases

Engineering Contradiction:

Improvefuel separationVSAvoidinstallation space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent combines two separate conduit functions into a single integrated conduit with an internal partition. This merging reduces the overall space required for installation while maintaining effective fuel separation through the partition structure, thereby resolving the contradiction between reliability and installation space requirements.

Inventive Principle:

Principle #5Merging (Combining)

4Device complexity

If a single conduit with partition is used, then device complexity is reduced, but fuel leakage risk increases

Engineering Contradiction:

Improveconduit configurationVSAvoidfuel separation

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The single conduit is segmented into two separate flow paths by a partition, which effectively prevents fuel leakage from the mixture channel into the air channel. This segmentation approach maintains simple device complexity while ensuring reliable fuel separation, resolving the contradiction between reduced complexity and leakage risk.

Inventive Principle:

Principle #1Segmentation

5Weight of stationary object

If a single conduit with partition is used, then material expenditure is reduced, but manufacturing precision requirements increase

Engineering Contradiction:

Improveintake adapter weightVSAvoidpartition alignment

Core Design Contradiction:

Weight of stationary objectVSManufacturing precision

Solution Approach 1:

The patent merges the mixture channel and air channel into a single conduit with an internal partition, reducing material expenditure and weight. The partition is designed as an integrated component that can be manufactured with standard precision tolerances, thereby reducing the overall manufacturing precision requirements compared to assembling two separate conduits, resolving the contradiction between weight reduction and manufacturing precision.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7513225B2Internal combustion engine

Publication Date: 2009.04.07 ANDREAS STIHL AG & CO KG

AI summary

An internal combustion engine having an intake channel for supply of fuel and combustion air, and divided over a portion of its length into a mixture channel, and into a supply channel for supply of largely fuel-free air. A simple manufacture of the engine and a simple construction are achieved if a portion of the intake channel is guided in an elastic intake adapter, whereby the intake adapter has a partition that extends over at least a portion of the length of the intake adapter and divides the intake channel into a mixture channel and a supply channel.