Fluid Distribution Device for Selective Cylinder Cooling
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Solution Overview
Problem
Internal combustion engines experience increased particle formation and deteriorated emissions when cylinders are reactivated after deactivation, due to piston cooling issues, leading to deformation of ring joints and increased oil transport into the combustion chamber.
Innovation Solution
A distribution device with a main channel and outlet channels, featuring an inner channel that directs fluid to specific outlet channels and a shut-off device to selectively block fluid flow to non-operational cylinders, using a solenoid valve for independent control, allowing continued cooling of operational cylinders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If piston cooling is deactivated for deactivated cylinders, then emissions are improved and particle formation is reduced, but the system complexity increases due to the need for selective control mechanisms
Solution Approach 1:
The distribution device is segmented into a main channel and multiple outlet channels, with an inner channel system that can selectively direct fluid flow to specific outlets. This segmentation allows independent control of cooling flow to each cylinder, enabling deactivation of cooling for deactivated cylinders while maintaining cooling for active cylinders, thus reducing emissions without requiring complete system redesign
Solution Approach 2:
An inner channel is nested within the main channel, creating a hierarchical flow distribution system. The inner channel can selectively block or direct flow to specific outlet channels while the main channel continues to supply fluid. This nested structure enables selective control with a compact design, reducing the complexity of controlling each outlet separately
2Ease of operation
If a shut-off device blocks fluid flow to the inner channel, then cooling is selectively deactivated for specific outlets, but the manufacturing complexity increases
Solution Approach 1:
The shut-off device is merged with the inner channel structure, combining the blocking function directly into the flow distribution pathway. This integration eliminates the need for separate external control mechanisms for each outlet, simplifying both operation and manufacturing while enabling selective cooling deactivation
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
Reduces particle emissions by selectively deactivating piston cooling for inactive cylinders, preventing oil transport into combustion chambers and maintaining cooling for active cylinders, thus mitigating the adverse effects of cylinder deactivation.
Implementation Method 1
The shut-off device has a solenoid valve (28) which makes it possible, by means of an electromagnetic force, to move the shut-off element (36) independently of the oil pressure in the main channel (12)
Data Source
Figure 1
Figure 2~3
AI summary
A distribution device for distributing fluid flows, comprising a main channel and a plurality of outlet channels branching off from the main channel, wherein the distribution device is configured to distribute a fluid flow entering the main channel to the outlet channels. An inner channel is arranged within the main channel, wherein the inner channel is configured to direct fluid entering the inner channel to at least one of the outlet channels, and wherein the distribution device includes a shut-off device for shutting off a fluid flow entering the inner channel from the main channel.