Dual-Pump Fluid Delivery Layout to Prevent Air Suction
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Solution Overview
Problem
Classic fluid delivery systems for motor vehicles face issues such as high flow resistance and power requirements due to filter modules, and are susceptible to air suction during extreme driving conditions, which can lead to interruptions in fluid supply to machine assemblies, potentially causing damage.
Innovation Solution
A fluid delivery system with a dual-pump configuration and a housing design that includes multiple suction and pressure ports, return openings, and a baffle plate to prevent air suction and ensure continuous fluid supply, while minimizing space and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter module is used to filter the fluid, then the fluid is purified of particles and contaminants, but the flow resistance increases and power requirement increases
Solution Approach 1:
The fluid is filtered in advance before entering the pump, so that the pump does not have to overcome the resistance of the filter during operation. This preliminary filtering action separates the filtering function from the pumping function, allowing the pump to operate with lower power consumption while still ensuring purified fluid supply to the machine assembly.
2Volume of stationary object
If the reservoir is arranged below the machine assembly, then space is saved, but air is suctioned during extreme driving situations
Solution Approach 1:
A baffle plate is introduced as an intermediary element between the pump and the reservoir. This baffle plate creates a buffer zone that prevents the pump from directly suctioning air during extreme driving situations, while allowing the reservoir to remain in the space-efficient position below the machine assembly. The baffle plate mediates between the space constraint and the reliability requirement.
3Reliability
If the pump is positioned at a deep location within the reservoir, then air suction is prevented, but the vertical space requirement increases
Solution Approach 1:
Instead of moving the pump to a deep location within the reservoir, a baffle plate is used as an intermediary structure that extends downward from the pump location. This baffle plate creates a fluid barrier that prevents air suction without requiring the pump itself to be positioned at great depth, thereby reducing the vertical space requirement while maintaining reliability.
4Reliability
If a baffle plate is added to prevent air suction, then air suction is prevented, but the device complexity increases
Solution Approach 1:
The baffle plate is designed as a thin, simple partition wall that can be easily integrated into the existing reservoir structure. Rather than adding complex three-dimensional structures, the thin baffle plate provides the necessary air prevention function with minimal increase in device complexity, maintaining ease of manufacturing and assembly.
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
The system effectively prevents air suction and ensures reliable fluid supply to machine assemblies, reducing the risk of damage and improving fuel efficiency by minimizing power consumption and maintaining fluid circulation during extreme driving conditions.
Implementation Method 1
Cornering and/or sharp acceleration or braking manoeuvres when the motor vehicle is at high speed can result in the centrifugal forces which arise pressing the fluid, in particular oil, away from the aspiration point within the reservoir
Implementation Method 2
Classic fluid delivery systems for supplying fluid to a machine assembly, in particular within the motor vehicle sector for supplying fluid to an engine or transmission, are usually based on forced-feed lubrication, in particular wet-sump lubrication, using at least one pump which delivers the fluid
Data Source
AI summary
A fluid delivery system for supplying fluid to a machine assembly includes: a pump module; a drive for the pump module; and a housing which includes a reservoir for the fluid. The reservoir includes an aspiration point, and the pump module includes a first inlet, a second inlet, a first outlet and a second outlet. The first inlet is fluidically connected to the reservoir via a first suction conduit, and the first outlet is fluidically connected to the machine assembly via a first pressure conduit. The second inlet is fluidically connected to the housing via a second suction conduit, and the second outlet is fluidically connected to the reservoir via a second pressure conduit.