Tractor Fuel Tank Layout With Integrated Reductant Tank Recess
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Solution Overview
Problem
In tractors, the arrangement of fuel tanks and reductant tanks for exhaust gas purification systems limits the capacity of fuel tanks due to spatial constraints, requiring sacrifices in length or operation unit size.
Innovation Solution
The reductant tank is accommodated in a recess at the lower-front portion of one fuel tank, allowing it to be aligned up and down with the fuel tank, and supported by an auxiliary frame, enabling compact arrangement without lengthening the tractor or reducing operation unit size, with a recessed front surface to avoid interference with wheels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reductant tank is arranged in front of the left fuel tank (aligned in front-rear direction), then the SCR denitration device can be mounted, but the longitudinal length of the tractor is limited and the operation unit or steps may have to be sacrificed
Solution Approach 1:
The reductant tank is rearranged from a front-rear alignment with the fuel tank to a vertical alignment, utilizing the vertical space above the fuel tank. This dimensional change allows the reductant tank to be positioned without extending the longitudinal length of the tractor, thereby resolving the contradiction between mounting the SCR device and maintaining acceptable tractor length.
2Reliability
If the reductant tank is arranged in front of the left fuel tank, then the SCR case can be mounted, but the capacity of the fuel tank is limited due to spatial constraints
Solution Approach 1:
By positioning the reductant tank vertically above the fuel tank rather than horizontally in front of it, the fuel tank can extend further in the longitudinal direction without interfering with the reductant tank. This dimensional rearrangement resolves the spatial conflict, allowing both the SCR device to be mounted and the fuel tank capacity to be increased.
3Quantity of substance
If the reductant tank is positioned to maximize capacity, then more reductant can be stored, but the tank may interfere with the front wheels
Solution Approach 1:
The front surface of the reductant tank is designed with a recessed portion at the lower region, creating a local modification that provides clearance for the front wheels. This localized structural adjustment allows the tank to maintain maximum capacity while avoiding interference with wheel operation during steering or suspension movement.
Data Source
AI summary
A tractor comprising a traveling body having an engine; front wheels and rear wheels that support the traveling body; front fenders that cover the front wheels; steps for getting on and off an operation unit on the traveling body; a fuel tanks for supplying fuel to the engine; a post-processing device configured to purify exhaust gas of the engine; and a reducing agent tank that stores a reducing agent to be supplied to the post-processing device, wherein the reducing agent tank is accommodated in a tank recess of the fuel tank, wherein at least a portion of the reducing agent tank and the fuel tank are placed between the front fender and the steps, and wherein the fuel tank extends rearward from between the front fender and the step through the inward of the reducing agent tank in in the width direction of the machine body