Pivoting Engine Cover with Integrated Air Pre-Cleaning
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Solution Overview
Problem
Current combine harvester designs expose operators to heat radiation and noise from the engine, and the proximity of the maintenance platform leads to frequent clogging of filter elements due to dust, while existing solutions face issues with branch damage and inefficient air pre-filtering.
Innovation Solution
An integrated engine cover with a pivoting mechanism that incorporates an air pre-cleaning housing, reducing installation space and material usage, and featuring a flush design to prevent branch damage, along with a sealed air outlet to minimize dust entry and improve accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engine is located close to the maintenance platform for easier access, then the operator can more easily service the engine, but the operator is exposed to heat radiation and noise from the engine
Solution Approach 1:
The engine compartment is separated from the operator area by a solid engine cover that divides the machine into distinct zones. This segmentation allows the engine to be positioned for maintenance accessibility while the cover blocks heat and noise from reaching the operator, resolving the contradiction between ease of operation and harmful factor exposure.
2Use of energy by moving object
If the engine cover has a protruding air pre-filter for air intake, then the engine receives sufficient combustion air, but the protruding filter is vulnerable to damage from tree branches and gets clogged with foliage
Solution Approach 1:
The air pre-filter is extracted from its traditional protruding position and integrated into the flat plane of the engine cover. The air intake openings are positioned in the engine cover surface itself, eliminating the vulnerable protruding filter element while maintaining adequate air supply to the engine through the covered intake passages.
3Reliability
If the engine cover is designed with a fixed grille for air intake and visual engine checking, then air can be pre-cleaned and engine status can be monitored, but the cover requires multiple separate components increasing complexity
Solution Approach 1:
The engine cover integrates multiple functions into a single unified component: it provides structural coverage, contains air intake openings for pre-cleaning, and allows visual engine monitoring through the cover design. This merging eliminates the need for separate fixed grilles and access doors, reducing component complexity while maintaining all necessary functions.
4Loss of substance
If the engine cover is made with thin sheet metal to reduce material usage, then material cost and weight are reduced, but the cover may lack sufficient structural strength
Solution Approach 1:
The engine cover is constructed with locally optimized properties: thin sheet metal is used in areas requiring flexibility and weight reduction, while strategically positioned ribs and the integrated air pre-cleaner housing provide localized structural reinforcement. This local quality approach maintains sufficient overall strength while minimizing total material usage.
Data Source
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AI summary
The engine cover (110) has a cover element, particularly as a cover grill, where an air pre cleaning housing is provided for pre-cleaning the air supplied to an internal combustion engine (124). A unit is provided for pivoting the engine cover on a harvesting machine. The air pre cleaning housing is integrated in the engine cover.