Integrated Auxiliary Fuel Tank for Stable Low-Level Fuel Supply
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Solution Overview
Problem
Existing fuel oil systems in heavy vehicles face instability in continuous fuel supply due to air intake at low liquid levels, especially on uneven roads, and require cumbersome dual fuel systems or complex maintenance of coarse filters.
Innovation Solution
An integrated auxiliary fuel oil tank with a smaller volume, mounted alongside the main tank, includes a gear pump assembly and coarse filter, ensuring continuous fuel supply through a dual passage system, active fuel delivery under special conditions, and simplified maintenance, with an electric heating mechanism for low-temperature environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a main fuel oil tank with large volume is used, then fuel storage capacity is improved, but fuel supply stability deteriorates at low liquid levels due to air intake on uneven roads
Solution Approach 1:
The fuel tank system is divided into two separate tanks: a main fuel oil tank for bulk storage and an auxiliary fuel oil tank for maintaining supply stability. The auxiliary tank contains a floating suction port that remains submerged at low liquid levels, preventing air intake while the main tank provides adequate storage capacity.
2Reliability
If two fuel oil tanks are mounted at different positions and connected through pipeline, then fuel supply stability is improved, but device complexity and space occupation increase
Solution Approach 1:
The auxiliary fuel oil tank is integrated directly onto the main fuel oil tank body, with the two tanks positioned adjacent to each other and connected through an integrated structure. This merging approach eliminates the need for complex external pipeline connections while maintaining the dual-tank functionality for stable fuel supply.
3Ease of repair
If coarse filter is placed outside fuel oil tank, then filter maintenance is simplified, but device complexity increases due to additional mounting requirements
Solution Approach 1:
The coarse filter is integrated directly onto the auxiliary fuel oil tank, forming a combined structure. The filter is positioned at the bottom of the auxiliary tank where it can be easily accessed for maintenance while being structurally integrated, thus simplifying the overall system rather than increasing complexity.
4Ease of manufacture
If filter core mounting port is formed at upper part of tank, then manufacturing is simplified, but ease of repair deteriorates due to inconvenient maintenance access
Solution Approach 1:
Instead of placing the filter core mounting port at the upper part of the tank for manufacturing convenience, the filter is positioned at the bottom of the auxiliary fuel oil tank. This inverted approach makes the filter more accessible for maintenance operations while the mounting structure remains straightforward to manufacture.
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 integrated design provides stable and continuous fuel supply, reduces pipeline complexity, facilitates easy maintenance, and adapts to different filter types, while effectively handling low temperatures.
Implementation Method 1
a gear pump assembly and a coarse filter are mounted on the inner side of the fuel oil tank body; a fuel oil suction passage passing through the coarse filter is arranged between the fuel oil tank body and an engine fuel oil system
Implementation Method 2
a heating mechanism is provided for the high-grade diesel
Data Source
AI summary
The present invention provides an integrated auxiliary fuel oil tank for a vehicle, which structurally includes a fuel oil tank body, wherein a gear pump assembly and a coarse filter are mounted on the inner side of the fuel oil tank body, and a fuel oil suction passage passing through the coarse filter and a fuel oil return pipeline are arranged between the fuel oil tank body and an engine fuel oil system. The gear pump assembly is provided with a first passage during forward rotation, and a fuel oil filling passage is arranged between the main fuel oil tank of the vehicle and the fuel oil tank body. The gear pump assembly is further provided with a second passage during reverse rotation, and an active fuel oil supply passage is further arranged between the fuel oil tank body and the engine fuel oil system.