Motor Grader Reducing Agent Tank Lateral Placement
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Solution Overview
Problem
The installation of a reducing agent tank in motor graders necessitates a configuration that extends the vehicle body length, compromising steering performance and weight balance due to the requirement for the tank to be positioned at a similar height to the fuel tank, leading to increased vehicle length.
Innovation Solution
The reducing agent tank is positioned rearward and adjacent to the fuel tank, closer to the vehicle's center in the width direction, allowing it to be placed between the rear support part and the lateral frame, thereby minimizing the vehicle body extension. This configuration includes a rear support part attached to one lateral frame, allowing the tank to be placed in a position overlapping with the rear support part, and is supported by a rear frame to prevent heat transfer from the fuel tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reducing agent tank is disposed at a height equivalent to that of the fuel tank to easily refill the reducing agent, then the ease of operation is improved, but the vehicle body length is increased
Solution Approach 1:
The reducing agent tank is positioned in the width direction (lateral dimension) rather than extending the vehicle in the length direction. By placing the tank between the lateral frames closer to one side, the design utilizes the unused lateral space to accommodate the tank while maintaining a compact overall vehicle length.
Solution Approach 2:
Instead of positioning the reducing agent tank symmetrically or centrally as might be conventional, the invention places the tank asymmetrically closer to one lateral frame. This inverted approach to tank placement allows efficient use of available space and avoids increasing vehicle body length.
2Ease of operation
If the reducing agent tank is disposed further rearward to accommodate the tank at the required height, then the ease of operation is improved, but the vehicle body length is increased
Solution Approach 1:
The solution transitions from extending the vehicle in the longitudinal dimension to utilizing the lateral dimension for tank placement. By positioning the tank between the lateral frames near one side, the design accommodates the tank without increasing the rearward extension of the vehicle body.
3Length of moving object
If the reducing agent tank is disposed adjacent to the fuel tank closer to one lateral frame, then the vehicle body length is suppressed, but the weight balance may be affected
Solution Approach 1:
The lateral frames are designed with different functions for each side. One lateral frame serves both as a structural support and as a mounting position for the reducing agent tank, while the other lateral frame provides clearance. This asymmetric local configuration allows compact tank placement while maintaining overall vehicle stability through proper structural design.
Data Source
AI summary
A motor grader includes a fuel tank, a vehicle body frame, a left-side mount part, a right-side mount part, a rear-side mount part and a reducing agent tank. The left-side mount part and the right-side mount part are respectively disposed on a left lateral frame and a right lateral frame while being disposed on the both sides of the fuel tank in a vehicle width direction, and fix the fuel tank to the vehicle body frame. The rear-side mount part is disposed on the left lateral frame in the vehicle width direction while being disposed rearward of the fuel tank, and fixes the fuel tank to the vehicle body frame. The reducing agent tank is disposed rearward of and adjacently to the fuel tank while being disposed on the right lateral frame side, and accumulates a reducing agent for processing an exhaust gas from an engine.