Integrated Dual Pump Module Layout for Compact Drive Unit Cooling
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Solution Overview
Problem
Existing pump arrangements in motor vehicles require significant installation space and are complex to install due to multiple separate components, particularly when multiple pumps are needed for lubrication and cooling of drive units.
Innovation Solution
A compact pump module with a housing module containing an electronics housing and pump housing, integrated hydraulic pumps, and a circuit board, allowing axial mounting and connection to the drive unit, with features like connector plugs and exposed stators for direct cooling and modular design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate pumps are installed in the motor vehicle, then each pump can be independently designed and maintained, but the installation space requirement increases and the installation complexity increases
Solution Approach 1:
The patent combines multiple hydraulic pumps into a single integrated pump module with a common drive unit and shared mounting structure. This merging approach reduces the total installation space while maintaining the functional independence of each pump through separate inlet/outlet connections and individual hydraulic chambers.
2Adaptability or versatility
If multiple separate pumps are installed in the motor vehicle, then each pump can be independently designed and maintained, but the installation complexity increases
Solution Approach 1:
The patent integrates multiple pumps into a single modular unit with common mounting features and standardized connections. This reduces installation complexity by decreasing the number of separate components that need to be positioned and secured, while maintaining independent pump functionality through internal separation.
3Volume of stationary object
If the pump module is arranged in an oil sump, then the available space is reduced, but the cooling requirement for the stator increases
Solution Approach 1:
The patent utilizes the surrounding oil in the oil sump as a natural coolant for the stator, eliminating the need for a separate cooling system. The oil flow around the stator provides passive cooling through convection and conduction, allowing the compact pump module to be installed directly in the oil sump without additional cooling infrastructure.
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 solution minimizes installation space, simplifies installation, and enables efficient lubrication and cooling of drive units with reduced components, while maintaining reliability and efficiency.
Implementation Method 1
oil can wash directly around the stator. This allows the stator to be cooled without requiring a separate, costly coolant circuit.
Implementation Method 2
oil can wash directly around the stator. This allows the stator to be cooled
Data Source
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AI summary
The invention concerns a pump module (10) for a drive unit of a motor vehicle, with a housing module (16) having an electronics housing (18) and a pump housing (20), a circuit board (22) which is received in the electronics housing (18) and is equipped with electronic components (24), at least one connector plug (30) which is provided on the electronics housing (18) and has electrical contacts (32) which are electrically connected to conductors of the circuit board (22), and two hydraulic pumps (12) which are mounted in the pump housing (20) and each have an electric motor (40), wherein the pump housing (20) is axially mounted on the electronics housing (18).