MAP Sensor Remote Mounting on Motorcycle Frame
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Solution Overview
Problem
The existing mounting methods for manifold air pressure (MAP) sensors in internal combustion engines of two-wheeled vehicles face space constraints due to surrounding automotive parts, leading to difficulties in precise air-fuel mixture control and maintenance accessibility.
Innovation Solution
A remote mounting system for the MAP sensor is implemented, where the sensor is attached to the vehicle frame assembly outside the intake system, using a flexible hose connection to tap into the intake manifold's pressure, allowing for optimal placement and orientation to avoid space constraints and heat radiation, while providing a stable and rigid mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the MAP sensor is mounted inside the intake manifold, then the sensor can directly sense the air pressure for precise air-fuel control, but the space becomes crowded and compromises engine size or other component capacity
Solution Approach 1:
The sensing function is segmented from the main engine structure by using a separate sensor housing mounted on the engine outer periphery, while the sensing element remains functionally connected to the intake manifold through a dedicated port. This allows the sensing capability to be separated spatially from the engine core volume.
Solution Approach 2:
A flexible hose or rigid conduit acts as an intermediary element, connecting the sensing element in the external housing to the intake manifold's pressure field. This intermediary transmits the pressure information without requiring the sensor to occupy space within the crowded intake manifold area.
2Measurement precision
If the MAP sensor is mounted inside the intake manifold, then the sensor can directly sense the air pressure, but the accessibility for maintenance becomes difficult
Solution Approach 1:
The MAP sensor is extracted from its traditional location within the intake manifold and repositioned to an external housing mounted on the engine periphery. This extraction maintains the sensing function through a pressure connection while providing easy accessibility for installation, removal, and maintenance operations.
3Measurement precision
If the MAP sensor is mounted inside the intake manifold, then the sensor can directly sense the air pressure, but the layout clearance for front wheel function is reduced
Solution Approach 1:
The sensor mounting is moved from the internal three-dimensional space of the intake manifold to an external surface mounting on the engine periphery. This dimensional relocation provides adequate clearance in all directions, including the front wheel area, while maintaining pressure sensing capability through the connection port and conduit system.
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 enables precise control of the air-fuel mixture without compromising engine or other component sizes, improves accessibility for maintenance, and maintains sensor stability, ensuring efficient engine operation without the limitations of traditional mounting methods.
Implementation Method 1
a flexible hose connection to tap into the intake manifold's pressure
Data Source
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AI summary
The present invention relates to mounting of a sensing element (27) on a two-wheeled vehicle (1). Generally the sensor element (27) is mounted in an intake manifold (32) of the internal combustion engine (25). However the intake manifold faces a space constraint and also radiates unwanted heat which is not suitable for the sensing element (27). Thus, the sensing element (27) is to be mounted on the mainframe assembly (102). The MAP sensor (27) is mounted on the mainframe assembly (102) to provide it a stable and rigid mounting free form vibrations, and also protect it from the heat which is radiated from an internal combustion engine (25) or its intake manifold (32).