Transmission Fluid Guiding Device Segmentation
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Solution Overview
Problem
Current fluid guiding devices in motor vehicle transmissions with wet-running clutches and stepped transmissions face challenges in efficiently collecting and distributing fluid across various operating states, particularly when the vehicle is stationary or being towed, leading to potential lubrication gaps.
Innovation Solution
A fluid guiding device with a base attached to the transmission housing, featuring a clutch collector and transmission collector that extend in opposite longitudinal directions, ensuring fluid is caught and fed to a feed device, which can supply fluid to consumers like bearing points and idler gears, even when the drive motor is off, using a one-piece component design and guide ribs to direct fluid effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fluid guiding device is used to collect and distribute fluid in a transmission, then lubrication and cooling of transmission components are improved, but the device complexity increases due to multiple collectors and feed devices
Solution Approach 1:
The fluid guiding device is segmented into multiple functional components: a clutch collector for collecting fluid from the clutch, a transmission collector for collecting fluid from transmission gears, and feed devices for distributing fluid to specific consumers. This segmentation allows each component to perform its specific function efficiently, ensuring reliable lubrication while maintaining manageable complexity through modular design.
Solution Approach 2:
The base serves multiple functions: it supports both the clutch collector and transmission collector, provides mounting points for feed devices, and acts as a fluid distribution manifold. This multi-functionality reduces the overall number of components needed, balancing the need for comprehensive fluid management with device complexity constraints.
2Ease of operation
If the feed device extends in longitudinal direction from the base, then fluid can be supplied to distant consumers, but the length of the device increases
Solution Approach 1:
The feed devices are configured to extend in the longitudinal direction from the base, utilizing the available axial space within the transmission housing. This dimensional arrangement allows fluid to be supplied to distant consumers (such as bearings and gears located along the transmission shaft) without significantly increasing the overall radial or axial footprint of the fluid guiding device, thus maintaining compact transmission design.
3Productivity
If separate collectors are used for clutch and transmission, then fluid collection efficiency is improved, but the assembly complexity increases
Solution Approach 1:
Separate collectors are provided for the clutch and transmission components, with the clutch collector positioned to receive fluid from the clutch assembly and the transmission collector positioned to receive fluid from rotating gears. This segmentation ensures that fluid from different sources is collected efficiently and directed to appropriate feed devices, maximizing fluid collection efficiency while maintaining clear functional separation.
Solution Approach 2:
The clutch collector and transmission collector are both mounted on the same base structure, which integrates their support functions. This merging of mounting functions on a common base reduces the number of separate support structures needed, thereby reducing assembly complexity while maintaining the efficiency benefits of separate fluid collection paths.
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
Ensures reliable lubrication and cooling across all operating states, including stationary and towing conditions, by efficiently collecting and distributing fluid to critical components, minimizing assembly complexity and ensuring continuous fluid supply to support bearings and transmission shafts.
Implementation Method 1
a first subassembly that rotates into a fluid sump and a second subassembly that rotates into a fluid sump
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Device (10) for fluid guidance in a motor vehicle transmission (34) comprising a wet clutch (36) and a multi-stage transmission (38), with a base (12) designed to be attached to a transmission housing (22), with a collection device for collecting fluid (78; 94; 100), and with a feed device connected to the collection device so that collected fluid (78; 94; 100) can be fed via the feed device (28) to a fluid consumer (46). The collection device (26) includes a clutch collection device (60) designed to collect fluid (78) carried along by the clutch (36) during operation when installed, and a transmission collection device (80) designed to collect fluid (94; 100) carried along by at least one gear (48; 52) during operation when installed.