Compartmentalized Intake Distributor for Blow-by Gas Control

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Solution Overview

Problem

In internal combustion engines, the existing arrangements for fixing heat exchangers and intake distributors to cylinder heads face challenges in controlling airflow and gas backflow, particularly in indirect fuel or gas injection systems, which can lead to inefficiencies and increased pollutant discharge.

Innovation Solution

The proposed solution involves an air intake distributor with compartmentalized admission chambers, each dedicated to a specific cylinder, featuring a device for controlling airtightness between compartments and utilizing elastic means and non-return valves to manage deoiled gas flow, ensuring airflow insulation and backflow control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the intake chamber is divided into compartments for each cylinder, then airflow control precision is improved, but device complexity increases

Engineering Contradiction:

Improveairflow control precisionVSAvoidintake manifold structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The intake chamber is divided into multiple compartments, with each compartment corresponding to a specific cylinder. This segmentation allows independent airflow control for each cylinder through dedicated admission orifices and control means, thereby improving airflow control precision while managing structural complexity through systematic division.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each compartment is equipped with localized control mechanisms including admission orifices and control means specific to that compartment. This local quality approach enables precise control of airflow to each cylinder individually, matching the airflow characteristics to the specific requirements of each combustion chamber.

Inventive Principle:

Principle #3Local quality

2Reliability

If elastic means are used to control passage between compartments, then backflow prevention is improved, but device complexity increases

Engineering Contradiction:

Improvebackflow preventionVSAvoidcontrol mechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Elastic means such as elastic membranes or springs are employed to automatically control the passage between compartments. These self-actuating components respond to pressure differences and flow conditions to prevent backflow without requiring external control systems, thereby improving reliability while minimizing the increase in device complexity.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The elastic means utilize changes in physical parameters such as elasticity and pressure to control the passage between compartments. The elastic components deform or return to their original state based on pressure differentials, automatically preventing backflow when needed while maintaining open passages during normal operation.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If deoiled gas injection is implemented in the intake manifold, then engine efficiency is improved, but pollutant discharge increases

Engineering Contradiction:

Improveengine efficiencyVSAvoidpollutant discharge

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

Oil vapors are extracted and separated from the exhaust gases through a decanter before the deoiled gases are reintroduced into the intake manifold. This extraction process removes the harmful oil components while retaining the useful burnt gases that can improve combustion efficiency when recirculated.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The burnt gases that would otherwise be harmful exhaust emissions are converted into a beneficial resource by recirculating them through the intake manifold. The deoiled exhaust gases improve combustion efficiency and can be used to control combustion characteristics, transforming a harmful waste product into a useful component for optimizing engine performance.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 arrangement effectively isolates airflow to individual combustion chambers, preventing gas backflow and enhancing engine efficiency by ensuring precise control over deoiled gas introduction, thereby reducing pollutant discharge and optimizing engine performance.

Implementation Method 1

said device comprises an elastic means for controlling the passage of gas flow

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

The said valve can be pushed into the supply duct

Methodology Applied

Scientific EffectPressure differential: Pressure Gradient

Data Source

PatentEP3839239B1Combustion engine with manifold with integrated blow-by rail

Publication Date: 2024.05.29 HORSE POWERTRAIN SOLUTIONS S L U

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AI summary

Air intake distributor (10) of an indirect fuel injection internal combustion engine comprising a cylinder head (50) in which tubular intake ducts (52) are cut, opening on one side into an intake chamber (11) surrounded by the intake distributor, and on the opposite side into a combustion chamber (53) delimited by a cylinder, a piston and the lower wall of the cylinder head, said distributor having inlet ports (23) for a supply rail (21) of oil-free gases, characterized in that the intake chamber (11) is divided into air passage compartments (20) each of which is dedicated to a cylinder and includes an oil-free gas intake device capable of controlling the airtightness between two adjacent compartments (20).