In-Line Pilot Fuel Generation for Methanol Engine Efficiency
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Solution Overview
Problem
Internal combustion engines face inefficiencies and increased lifecycle risks due to the use of two separate fuel tanks for primary and pilot fuels, particularly with fuels like methanol that are prone to in-gas detonation, leading to reduced engine efficiency and shorter lifespans.
Innovation Solution
A system that includes a fuel tank, fluid pump, and dehydration reactor to convert primary fuel into pilot fuel within the engine, eliminating the need for a secondary tank and optimizing fuel injection timing and ratios based on pressure and temperature sensors to initiate combustion efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two separate fuel tanks are used for primary and pilot fuels, then the power system can operate with proper fuel storage, but the space required for fluid storage increases
Solution Approach 1:
The patent merges the primary fuel tank and pilot fuel tank into a single storage container, eliminating the need for separate tanks. The system uses a single fuel source that is distributed to both the dehydration reactor (for pilot fuel generation) and the primary fuel injector, thereby reducing the overall volume required for fluid storage while maintaining the functional separation of primary and pilot fuel delivery
Solution Approach 2:
The single fuel tank serves multiple functions: it stores the primary fuel for direct combustion and simultaneously serves as the source material for the dehydration reactor to generate pilot fuel. This multi-functional design eliminates the need for dedicated separate storage tanks for each fuel type
2Productivity
If gaseous dimethyl ether is mixed with inlet air for methanol engine, then the methanol can be converted to pilot fuel, but the propensity for in-gas detonation increases
Solution Approach 1:
The patent changes the physical state parameter of the pilot fuel from gaseous to liquid phase. By condensing the dimethyl ether produced in the dehydration reactor into liquid form before injection, the system maintains the fuel conversion functionality while significantly reducing the propensity for in-gas detonation, as liquid fuel injection prevents the premature gas-phase combustion that causes engine damage
3Ease of operation
If gaseous dimethyl ether is provided to the methanol engine, then the combustion reaction can be initiated, but the engine efficiency decreases
Solution Approach 1:
The patent changes the phase parameter of the pilot fuel from gas to liquid. Liquid pilot fuel injection provides more controlled and precise fuel delivery compared to gaseous injection, maintaining reliable combustion initiation while improving the overall efficiency of fuel-to-power conversion by preventing energy losses associated with in-gas detonation and uncontrolled combustion
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 enhances engine efficiency, reduces the risk of in-gas detonation, and extends engine lifespan by generating pilot fuel in-line, improving emission quality and operational stability.
Implementation Method 1
the dehydration reactor may be configured to receive the primary fuel, via the reactor feed line, and convert a portion of the primary fuel to a pilot fuel and a byproduct
Implementation Method 2
the fluid pump may be fluidly connected to the fuel tank and configured to obtain the primary fuel from the fuel tank and provide the primary fuel via a reactor feed line
Implementation Method 3
the power system may be configured to initiate a combustion reaction with the pilot fuel, wherein the combustion reaction consumes the primary fuel
Data Source
AI summary
A system includes a fuel tank and a dehydration reactor that are configured to provide a primary fuel and a pilot fuel to a power system. The fuel tank is configured to store the primary fuel and is fluidly connected to a reactor feed line and a primary fuel line provide the primary fuel. The dehydration reactor is configured to receive the primary fuel via the reactor feed line and convert a portion of the primary fuel to the pilot fuel and a byproduct. The power system is configured to receive the pilot fuel from the dehydration reactor to initiate combustion of the primary fuel. The power system also includes a cylinder with an internal piston that receives the pilot fuel and the primary fuel, contains the combustion reaction, and generates power from the combustion reaction; and contains the combustion reaction. A pilot fuel injector provides the pilot fuel to the cylinder at a first time to initiate combustion and a primary fuel injector provides the pilot fuel to the cylinder at to generate power via the power system.