Vehicle Power Unit Transmission Layout for Selective Pump Drive
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle power units experience energy loss due to unnecessary driving of pumps, which is caused by varying rotational speeds of drive sources, leading to inefficient energy utilization and potential loss in driving other components.
Innovation Solution
A power unit design that includes a power transmission structure transmitting rotational power to both a pressure transmission pump and a lubrication pump, using distinct transmission components to optimize rotational power distribution and prevent undesired pump operation, thereby reducing energy loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump is rotationally driven by the drive source, then the pump can be driven to perform its function, but the pump may be driven unnecessarily causing extra energy consumption
Solution Approach 1:
The power transmission structure is segmented into multiple independent transmission components (first transmission component, second transmission component, third transmission component) that can independently control power transmission to different pumps. This segmentation allows selective engagement of transmission paths based on operational requirements, preventing unnecessary pump operation and reducing energy loss.
Solution Approach 2:
The transmission components are designed with dynamic engagement and disengagement capabilities, allowing the system to adaptively control power transmission to pumps based on real-time operational conditions. This dynamic control ensures pumps operate only when necessary, eliminating wasteful energy consumption from continuous or unnecessary pump operation.
2Adaptability or versatility
If the pump rotational speed varies with drive source operation state, then the pump can adapt to different operating conditions, but unnecessary driving occurs leading to energy waste
Solution Approach 1:
The system segments the power transmission paths into distinct components for different pumps, enabling independent control of each transmission path. This allows the system to adapt pump operation to actual needs while preventing energy waste from driving pumps that are not currently required.
3Device complexity
If a single power transmission structure drives multiple pumps, then the structure is simplified, but unnecessary pump driving causes energy loss
Solution Approach 1:
The power transmission structure is divided into multiple independent transmission components, each capable of selectively transmitting power to specific pumps. This segmentation maintains reasonable structural complexity while enabling precise control over pump operation, thereby preventing energy loss from unnecessary pump driving.
Solution Approach 2:
The transmission components act as intermediaries between the drive source and the pumps, providing selective engagement control. These intermediary elements enable the system to maintain a relatively simple overall structure while achieving sophisticated control over power distribution to prevent energy waste.
Data Source
AI summary
A power unit includes at least one drive source that outputs rotational power to a drive target other than pumps; a first pump rotationally driven by the rotational power of the drive source; a second pump rotationally driven by the rotational power of the drive source, the second pump being different form the first pump; and a power transmission structure that transmits the rotational power of the drive source to the first and second pumps. The power transmission structure includes transmission components and transmits the rotational power to the first pump through one of the transmission components and to the second pump through another of the transmission components.