Hydrogen Pressure Intensifier for Fuel Engine Range Extension
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Solution Overview
Problem
Hydrogen fuel engines face limitations in increasing cruising distance due to residual hydrogen pressure in tanks being below injection pressure, leading to inefficient fuel use and restricted range.
Innovation Solution
A hydrogen pressure maintenance system that includes a hydrogen tank, injector, hydrogen pressure controller, hydrogen pressure intensifier device, pressure sensor, and bypass valve, controlled by a controller to supply hydrogen through an intensifier when pressure falls below a predetermined level, using pneumatic or electric boosters to maintain optimal injection pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If injection pressure is increased to improve combustion efficiency, then combustion efficiency increases, but the remaining hydrogen in the tank below injection pressure cannot be used, limiting cruising distance
Solution Approach 1:
The system dynamically switches between two hydrogen supply paths based on real-time pressure conditions: using the pressure controller for normal operation and the pressure intensifier device when tank pressure drops below injection pressure. This dynamic adaptation allows the system to maintain high combustion efficiency while extending cruising distance by utilizing residual hydrogen.
Solution Approach 2:
The patent changes the pressure parameter of hydrogen supply by introducing a pressure intensifier device that can boost low-pressure residual hydrogen to the required injection pressure. This parameter transformation enables the system to use hydrogen that would otherwise be unusable, thereby extending cruising distance without compromising combustion efficiency.
2Duration of action of moving object
If residual pressure in hydrogen tank is reduced to improve cruising distance, then cruising distance increases, but injection pressure requirements cannot be met
Solution Approach 1:
The pressure intensifier device acts as an intermediary between the low-pressure residual hydrogen in the tank and the high-pressure injection requirement. It receives low-pressure hydrogen, boosts it to the required injection pressure, and supplies it to the injector, thereby enabling the use of residual hydrogen without compromising injection pressure requirements.
3Device complexity
If hydrogen is supplied through pressure controller only, then system is simple, but hydrogen below injection pressure cannot be utilized
Solution Approach 1:
The hydrogen supply system is segmented into two independent paths: one through the pressure controller for normal high-pressure hydrogen supply, and another through the pressure intensifier device for residual low-pressure hydrogen. This segmentation allows the system to handle different pressure conditions separately, extending cruising distance while maintaining manageable system complexity through modular design.
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 system effectively increases the cruising distance of hydrogen fuel engine vehicles by ensuring hydrogen pressure is maintained at optimal levels, enhancing fuel efficiency and range.
Implementation Method 1
a pneumatic booster pump configured to boost the pressure of the hydrogen; and a pneumatic provider configured to provide pneumatic pressure to drive the pneumatic booster pump
Implementation Method 2
a supercharger configured to increase an air pressure inflow to the hydrogen internal combustion engine
Data Source
AI summary
A hydrogen pressure maintenance system of a hydrogen fuel engine includes a hydrogen tank configured to store hydrogen, an injector configured to inject the hydrogen, a hydrogen internal combustion engine configured to operate using the hydrogen from the injector, a hydrogen pressure controller configured to supply the hydrogen to the injector by controlling a pressure of the hydrogen supplied from the hydrogen tank, a hydrogen pressure intensifier device configured to increase the pressure of the hydrogen and supply the hydrogen to the injector, a hydrogen pressure sensor configured to measure the pressure of the hydrogen and output a signal based on the measured pressure of the hydrogen, a hydrogen bypass valve configured to control the hydrogen to be supplied to the injector through the hydrogen pressure controller or to the injector through the hydrogen pressure intensifier device, and a controller configured to control the hydrogen bypass valve according to the signal from the hydrogen pressure sensor.