Two-Track Vehicle Axle Differential Lubrication by Centrifugal Oil Ejection
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Solution Overview
Problem
Existing vehicle axle designs require complex and space-consuming lubrication systems for axle differentials, necessitating large oil pumps and additional components like rails or nozzles for effective lubrication.
Innovation Solution
Lubrication of the axle differential is achieved through lubricant ejection from an adjacent rotating transmission component using centrifugal force, eliminating the need for additional components such as rails or nozzles, and utilizing existing housing openings for lubricant delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If injection lubrication is used for the axle differential, then adequate lubrication is achieved, but additional components (rails, nozzles) and structural space are required
Solution Approach 1:
The invention extracts and eliminates the additional lubrication components (rails, nozzles, oil-guiding shells) from the system by using the existing rotating transmission components to perform the lubrication function through centrifugal ejection of lubricant
Solution Approach 2:
The rotating transmission components serve themselves by ejecting lubricant onto themselves and the differential components through centrifugal force, eliminating the need for separate lubrication delivery systems
2Reliability
If injection lubrication with rails or nozzles is implemented, then lubrication of axle differential components is ensured, but structural space and component outlay increase
Solution Approach 1:
The rotating transmission components perform multiple functions: power transmission and lubrication delivery. The centrifugal ejection of lubricant from these components eliminates the need for dedicated lubrication structures, reducing structural space
Solution Approach 2:
The invention recovers lubricant that would otherwise be cast onto the transmission housing wall by redirecting it through centrifugal ejection onto the differential components, eliminating waste and reducing the need for additional lubrication infrastructure
3Reliability
If a large oil pump is used to supply oil for injection lubrication, then sufficient oil supply is achieved, but the pump dimensions and system complexity increase
Solution Approach 1:
The rotating transmission components generate their own lubrication delivery mechanism through centrifugal force, reducing the burden on the oil pump and allowing for a smaller, less complex pump design
Solution Approach 2:
The invention changes the lubrication delivery mechanism from pressure-driven injection to centrifugal ejection, altering the operational parameters and reducing the requirements for the oil pump
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 method reduces component and structural space requirements while ensuring effective lubrication of the axle differential, simplifying the lubrication system and potentially reducing the size of the oil pump.
Implementation Method 1
lubricant ejection of an adjacent rotating transmission component, during which lubricant drops are cast into the housing interior space of the differential housing through the housing opening thereof under the action of centrifugal force
Data Source
AI summary
A vehicle axle for a two-track vehicle may include a transmission which has an axle differential from output sides of which axle shafts are led to vehicle wheels. For axle-differential lubrication, a lubricant is able to be guided into the housing interior space of a differential housing of the axle differential via at least one housing opening of the differential housing. The axle-differential lubrication may be by way of lubricant ejection of an adjacent rotating transmission component. During the axle-differential lubrication, lubricant drops are able to be cast from the transmission component into the housing interior space of the differential housing through the housing opening of the differential housing under the action of centrifugal force.