Vehicle Motor Pump With Secondary High-Voltage Generator
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Solution Overview
Problem
Existing electric motor pumps in vehicles are inefficient, large in size, and complex, with high power draw from the alternator, and lack the ability to provide variable flow/pressure independent of engine speed, which hampers fuel efficiency and cooling/lubrication needs.
Innovation Solution
A combination motor and pumping system with a secondary electrical generation device, such as a claw pole generator and brushless rotor, generating a higher voltage 3-phase source, integrated with a vehicle engine control unit for amplitude control, allowing independent operation from the vehicle alternator and enabling smaller motor size and improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric motor pumps are driven from the vehicle alternator at standard voltage (12V DC), then the system uses proven technology with simple electrical connection, but the motor size becomes relatively large and efficiency is reduced
Solution Approach 1:
The patent changes the voltage parameter from standard 12V DC to higher voltage (e.g., 24V, 48V, or higher) to reduce motor size while maintaining the same mechanical output power. The motor pump system is specifically designed to operate at these higher voltages, allowing for a more compact motor design with fewer turns of wire and smaller magnetic components, thus resolving the contradiction between reliability of proven technology and motor size reduction.
2Device complexity
If electric motor pumps are driven from the vehicle alternator at standard voltage (12V DC), then the electrical connection is simple, but the system complexity increases due to required electronics and control systems
Solution Approach 1:
The patent replaces the conventional mechanical alternator-driven electrical generation system with a direct high-voltage electrical power source connected to the motor pump. This substitution eliminates the need for complex rectification, voltage regulation, and power conversion electronics that would be required to adapt standard vehicle electrical systems to drive the motor pump efficiently, thereby reducing both system complexity and energy losses.
3Ease of operation
If the pump operates at fixed speed tied to engine speed, then the system is simple to control, but the ability to provide variable flow/pressure independent of engine speed is lost
Solution Approach 1:
The patent implements a dynamically controllable motor pump system where the motor speed can be independently varied from engine speed through electronic control. The system includes a controller that receives signals from various sensors and adjusts the motor pump operating parameters in real-time to provide variable flow and pressure as needed, while maintaining simple overall system architecture through integrated control logic.
4Device complexity
If the pump system is integrated with the vehicle alternator at standard voltage, then the electrical system is simple, but the power draw from the alternator becomes excessive
Solution Approach 1:
The patent changes the operating voltage parameter of the motor pump system from standard 12V to higher voltage (24V, 48V, or higher), which directly reduces the current draw for the same power output. This parameter change allows the pump system to operate with lower power draw from the vehicle's electrical system while maintaining the same mechanical output, effectively resolving the contradiction between electrical system simplicity and power consumption.
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 solution provides a more efficient and compact pump system with variable flow/pressure control, reducing power loss and complexity, and enhancing fuel efficiency by decoupling pump speed from engine speed and using higher voltage power.
Implementation Method 1
the secondary electrical generation device is a claw pole generator combined with a brushless rotor for generating a 3-phase voltage source
Implementation Method 2
the motor for operating the fluid pump... wherein the secondary electrical generation device supplies a voltage to the motor
Data Source
Figure 1
AI summary
A combination motor and pumping system (10) for use in a vehicle, the vehicle including a vehicle electrical system, the combination system including a secondary electrical generation device (15) in communication with a vehicle engine, adapted to generate electrical power for the combination motor and pumping system; and a motor (16) for operating a fluid pump (22), the fluid pump for supplying a fluid to the engine of the vehicle, the motor in electrical communication with the secondary electrical generation device; wherein the secondary electrical generation device supplies a voltage to the motor higher than the voltage used in other vehicle electrical system.