Electric Power Take-Off System Decoupling Auxiliary Functions
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Solution Overview
Problem
Traditional Power Take-Off (PTO) systems in vehicles require the engine to idle, leading to excessive fuel consumption, emissions, noise pollution, and compliance issues with idling regulations, as they rely on internal combustion engines to power auxiliary equipment.
Innovation Solution
The electric Power Take-Off (ePTO) system decouples auxiliary functions from the internal combustion engine, using a motor controller and electric motor powered by a DC power source, such as a lithium-ion battery pack, to provide power independently of the engine speed, reducing idling and emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional PTO systems use internal combustion engine to power auxiliary equipment, then power transmission is reliable, but fuel consumption increases and emissions are generated during idling
Solution Approach 1:
The patent extracts the PTO function from the internal combustion engine by introducing a separate electric motor powered by a battery pack. This allows the auxiliary equipment to be powered independently without requiring the engine to idle, thereby reducing fuel consumption while maintaining reliable power transmission through the electric motor-hydraulic pump system.
Solution Approach 2:
The patent replaces the mechanical engine-driven PTO system with an electric motor-driven system. The electric motor substitutes the internal combustion engine as the power source, converting mechanical energy transmission to electrical energy transmission, which eliminates the need for engine idling and reduces fuel consumption.
2Duration of action of moving object
If traditional PTO systems require engine idling to provide power, then auxiliary equipment operates continuously, but exhaust emissions and noise pollution increase
Solution Approach 1:
The patent separates the power source for auxiliary equipment from the internal combustion engine by introducing an independent battery pack and electric motor system. This extraction allows auxiliary equipment to operate without engine idling, eliminating exhaust emissions and noise pollution while maintaining continuous operation capability.
Solution Approach 2:
The patent substitutes the engine-driven mechanical PTO system with an electric motor-driven system. This replacement eliminates the harmful byproducts of combustion (exhaust emissions and noise) while maintaining the ability to operate auxiliary equipment for extended periods through the battery pack.
3Power
If traditional PTO systems are integrated into the engine or transmission, then power transmission is direct, but the engine must remain running causing compliance issues with idling regulations
Solution Approach 1:
The patent extracts the PTO function from the engine-transmission integration by introducing a separate electric motor and battery pack system. This allows the engine to be shut down when auxiliary equipment is not needed, ensuring compliance with idle reduction regulations while maintaining efficient power transmission through the electric system when power is required.
Solution Approach 2:
The patent replaces the engine-integrated mechanical PTO with an electric motor-driven system. This substitution decouples the auxiliary equipment power source from the engine operation, allowing the engine to be turned off during idle periods and ensuring compliance with regulations while maintaining efficient power delivery when needed.
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 ePTO system significantly reduces fuel consumption, emissions, and noise pollution, while complying with regulations, offering cost savings and improved operational efficiency, with potential for hybrid and all-electric powertrains, and quick retrofitting to existing fleets.
Implementation Method 1
a motor controller and electric motor powered by a DC power source, such as a lithium-ion battery pack
Data Source
AI summary
An electric power take-off system for mounting to a truck body to complement an existing power-take-off system powered by an internal combustion engine. The system includes a motor, a battery for providing electrical power to the motor, a fluid reservoir, a pump for pumping fluid through at least one hose from the fluid reservoir to at least one truck function and for return of the fluid to the reservoir. The system also includes a system interlock rendering inoperable the electric power-take-off system when the internal combustion engine is in operation and a motor controller in communication with the motor for controlling the power output of the motor. The system also includes a charging unit for charging of the battery and a data management system operable to collect data.