Hydraulic Ride Height Pump With Pulsation Damping
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Solution Overview
Problem
Existing hydraulic vehicle height adjustment systems experience noise and pulsation issues due to the operation of cylindrical oil pumps.
Innovation Solution
A hydraulic vehicle height adjustment device that uses a gear pump driven by an electric motor to supply hydraulic pressure, incorporating a pulsation reducing part to maintain a constant fluid movement and reduce noise, with a system including a storage tank, housing, gear pump, electric motor, adjustment part, and control valves to manage fluid flow and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a cylindrical oil pump is used to supply hydraulic pressure, then hydraulic pressure can be generated, but noise and pulsation occur during operation
Solution Approach 1:
The harmful pulsation and noise are extracted and isolated from the main hydraulic system by introducing a separate pulsation reducing part. This component specifically targets and removes the harmful oscillations generated by the gear pump, allowing the main system to maintain hydraulic pressure generation while eliminating the adverse effects.
Solution Approach 2:
A pulsation reducing part is introduced as an intermediary component between the gear pump and the hydraulic circuit. This mediator absorbs and dampens the pulsations and noise generated by the gear pump before they propagate through the hydraulic system, thereby protecting the overall system from these harmful effects while maintaining functional performance.
2Object-affected harmful factors
If a gear pump is used instead of a cylindrical oil pump, then noise can be reduced, but fluid movement stability may be affected
Solution Approach 1:
The pulsation reducing part serves as an intermediary that stabilizes fluid movement while allowing the gear pump to operate. It mediates between the gear pump's output and the hydraulic system requirements, smoothing out fluctuations and maintaining stable fluid flow without compromising the noise reduction benefits of the gear pump design.
Solution Approach 2:
The pulsation reducing part modifies the fluid flow parameters by reducing pressure fluctuations and velocity variations. It changes the temporal characteristics of fluid movement, converting the pulsating flow from the gear pump into a more stable, continuous flow while maintaining the overall pressure generation capability.
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 device effectively adjusts vehicle height while minimizing noise and pulsation, ensuring smooth operation by amplifying fluid pressure and controlling fluid movement through the gear pump and pulsation reducing mechanisms.
Implementation Method 1
a gear pump part inserted into the housing part and having gears configured to press the fluid
Implementation Method 2
a pulsation reducing part inserted into the housing part, connected to the flow path portion, and configured to maintain a constant movement amount of the fluid
Data Source
AI summary
The present disclosure relates to a hydraulic vehicle height adjustment device including a storage tank part configured to store a fluid, a housing part connected to the storage tank part and configured to define a flow path portion through which the fluid moves, a gear pump part inserted into the housing part and having gears configured to press the fluid, an electric motor part mounted on the housing part and configured to operate the gear pump part when electric power is applied, an adjustment part connected to the housing part and configured to change a height of a vehicle body by using hydraulic pressure, and a pulsation reducing part inserted into the housing part, connected to the flow path portion, and configured to maintain a constant movement amount of the fluid.