Fuel Module System for CNG Engine Pressure and Temperature Control
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Solution Overview
Problem
Current fuel systems for vehicles using alternative fuels, such as compressed natural gas (CNG), lack efficient pressure regulation, temperature management, and filtration, which are crucial for optimal engine performance and efficiency.
Innovation Solution
A fuel module system that includes an inlet for receiving compressed gas, a first filter for initial filtration, a regulator for pressure adjustment to a target range, a second filter for further filtration, and temperature management through lines that adjust the gas temperature, all integrated with sensors for real-time monitoring and adjustment to ensure optimal delivery to the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed gas is delivered directly from container to engine, then system complexity is reduced, but pressure regulation and temperature management become insufficient for optimal engine performance
Solution Approach 1:
The fuel module system is divided into distinct functional components: a first filter for initial filtration, a regulator for pressure adjustment, a second filter for further filtration, and temperature management lines. Each component handles a specific aspect of gas processing, allowing the system to achieve comprehensive pressure regulation and temperature management while maintaining modularity and manageable complexity.
Solution Approach 2:
The system performs preliminary filtration and pressure regulation before gas delivery to the engine. The first filter removes contaminants early in the process, the regulator pre-adjusts pressure to optimal levels, and temperature management prepares the gas thermally, ensuring the gas is properly conditioned before entering the engine for reliable performance.
2Manufacturing precision
If multiple filters and regulators are added to the fuel system, then pressure regulation and filtration improve, but device complexity increases
Solution Approach 1:
The filtration system is segmented into two distinct filters: a first filter positioned before the regulator for initial contamination removal, and a second filter positioned after the regulator for final purification. This segmentation allows each filter to be optimized for its specific pressure range and filtration requirements, achieving superior pressure regulation and filtration while keeping each component relatively simple.
Solution Approach 2:
The regulator acts as an intermediary component between the two filters, receiving high-pressure gas from the first filter and delivering regulated-pressure gas to the second filter. This intermediary positioning allows the system to achieve precise pressure control while protecting the second filter from excessive pressure, thereby improving manufacturing precision without proportionally increasing overall system complexity.
3Temperature
If temperature management is implemented in the fuel module system, then gas temperature optimization improves, but system complexity and manufacturing cost increase
Solution Approach 1:
Temperature management lines are integrated as intermediary pathways within the existing fuel module structure. These lines facilitate heat exchange between the compressed gas and the surrounding environment or dedicated cooling/heating elements, allowing optimal temperature control without requiring a completely separate temperature management subsystem, thus limiting the increase in device complexity.
4Reliability
If dual filtration system is implemented, then fuel integrity is maintained, but device complexity and manufacturing cost increase
Solution Approach 1:
The filtration system is segmented into two stages with distinct functions: the first filter handles bulk contamination removal at high pressure, while the second filter performs fine filtration at regulated pressure. This segmentation maintains comprehensive fuel integrity by addressing different contamination levels at appropriate pressure stages, while each individual filter remains a relatively simple component that does not disproportionately increase overall system complexity.
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 fuel module system ensures that the compressed gas is delivered to the engine at optimal pressure, temperature, and flow rate, enhancing engine performance, efficiency, and reliability while maintaining the integrity of the fuel.
Implementation Method 1
a first filter that removes contaminants from the compressed gas
Implementation Method 2
a regulator that adjusts the first pressure of the compressed gas to a second pressure that is within a target range for pressure
Implementation Method 3
a second filter that removes contaminants from the compressed gas after the regulator adjusts at least one of the first pressure or the flow rate
Implementation Method 4
one or more lines that adjusts a temperature of a body of the fuel module system to change the first temperature of the compressed gas to a second temperature
Data Source
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Figure 5
AI summary
A fuel module system is provided. The fuel module system can be mounted on a chassis of a vehicle and deliver a material from a container to an engine at a regulated pressure and a target temperature for optimization of the vehicle. The flow of material can be from the one or more containers to the fuel module system and then to a portion of the engine, wherein the material housed within the one or more containers has a first temperature, a first pressure, and a first flow rate and at the delivery to the portion of engine, the material is adjusted by the fuel module system.