Shared-Motor Hydraulic Pump Layout for Vehicle Brake and Height Control
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Solution Overview
Problem
Vehicular hydraulic systems face challenges in reducing arrangement space and mounting weight due to the overlap of accessories with different actions, such as ABS and vehicle height adjustment mechanisms, which complicates design considerations like space allocation and weight distribution.
Innovation Solution
A vehicular hydraulic system where a single motor serves as a common power source for two hydraulic pumps, driving separate hydraulic drive devices with different actions, allowing for reduced space and weight requirements by optimizing the operation of each device independently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate motors are used for each hydraulic pump in different hydraulic drive devices, then each device can operate independently and reliably, but the arrangement space and mounting weight increase
Solution Approach 1:
The patent combines multiple hydraulic pumps into a single integrated pump unit that can be driven by one motor. The pump unit includes multiple piston groups that can be independently controlled through a distribution mechanism, allowing separate hydraulic drive devices to operate independently while sharing a common power source, thus reducing overall weight and space requirements
Solution Approach 2:
The single motor serves multiple functions by powering a multi-functional pump unit that can supply hydraulic pressure to different drive devices simultaneously or independently. The distribution mechanism enables one motor to perform the work of multiple dedicated motors through selective activation of different piston groups
2Reliability
If separate motors are used for each hydraulic pump in different hydraulic drive devices, then each device can operate independently and reliably, but the arrangement space increases
Solution Approach 1:
The patent combines multiple hydraulic pumps into a single integrated pump unit that can be driven by one motor. The pump unit includes multiple piston groups that can be independently controlled through a distribution mechanism, allowing separate hydraulic drive devices to operate independently while sharing a common power source, thus reducing overall weight and space requirements
Solution Approach 2:
The pump unit employs a nested structure where multiple piston groups are arranged concentrically or in compact configurations within a single housing. This nesting arrangement allows multiple pumping functions to occupy minimal space while maintaining independent operational capability through selective engagement of different piston groups
3Weight of moving object
If a single motor serves as common power source for multiple hydraulic pumps, then arrangement space and mounting weight are reduced, but the complexity of controlling independent operations increases
Solution Approach 1:
The patent introduces a distribution mechanism as an intermediary between the single motor and multiple piston groups. This mechanism includes switching elements that direct the motor's rotational force to specific piston groups based on operational requirements, simplifying control by providing a centralized interface rather than requiring direct control of each pump
Solution Approach 2:
The system employs dynamic control where the distribution mechanism can real-time allocate the motor's power to different piston groups based on demand. This dynamic switching capability allows the system to adapt to varying operational requirements while maintaining simple control architecture through a single motor interface
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 configuration effectively reduces the arrangement space and mounting weight of the vehicular hydraulic system while maintaining stable and independent operations of the hydraulic brake and vehicle height adjustment mechanisms, enhancing the system's efficiency and design flexibility.
Implementation Method 1
a first hydraulic drive device (60) that is driven by a hydraulic pressure generated in a first hydraulic pump (80)
Implementation Method 2
a single motor (130) serving as a common power source for the first hydraulic pump (80) and the second hydraulic pump (120)
Data Source
AI summary
A vehicular hydraulic system includes a first hydraulic drive device configured to be driven by a hydraulic pressure generated in a first hydraulic pump, a second hydraulic drive device configured to exhibit an action different from that of the first hydraulic drive device and to be driven by a hydraulic pressure generated in a second hydraulic pump, and a single motor serving as a common power source for the first hydraulic pump and the second hydraulic pump.