Boil-off Pipe Mounting for Tiltable Cab Liquefied Gas Vehicles
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Solution Overview
Problem
The existing arrangements for mounting boil-off pipes of liquefied gas fuel systems on vehicles with tiltable cabs compromise the optimization of the vehicle's load-carrying capacity and safety during tilting, as they often require space behind the cab and do not ensure safe tilting without disconnecting the tank.
Innovation Solution
An arrangement where the boil-off pipe is attached to the rear side of the vehicle cab via a coupling configuration that connects and disconnects from the tank based on the cab's position, using a hydraulic, electric, or optic circuit to prevent tilting when connected, allowing safe and efficient tilting by disconnecting when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the boil-off pipe is arranged behind the cab to avoid tilting influence, then the cab can tilt safely, but the load-carrying length of the vehicle is reduced
Solution Approach 1:
The connection arrangement dynamically transitions between connected and disconnected states based on cab position. In the non-tilted position, the coupling configuration connects the tank to the boil-off pipe. When the cab tilts, the coupling configuration automatically disconnects, allowing the boil-off pipe to be arranged behind the cab while maintaining safe operation during tilting.
2Length of moving object
If the boil-off pipe is arranged behind the cab, then the load-carrying length is optimized, but the risk of tilting with connected tank increases
Solution Approach 1:
The coupling configuration is designed to automatically disconnect the tank from the boil-off pipe before the cab tilting operation begins. This preliminary disconnection action prevents the risk of tilting with a connected tank, allowing the boil-off pipe to be safely arranged behind the cab for optimized load-carrying length.
3Reliability
If a coupling configuration is used to connect and disconnect the tank, then safe tilting is enabled, but the device complexity increases
Solution Approach 1:
The coupling configuration is designed to automatically connect and disconnect based on the cab position without requiring external control systems, sensors, or manual intervention. The mechanical design itself provides the control function, reducing device complexity while enabling safe tilting operations.
Data Source
Figure 1~2
Figure 3a~3c
Figure 4~5
AI summary
The present invention relates to an arrangement (A1; A2; A3) for mounting a boil-off pipe (20) of a liquefied gas fuel system (I) to a vehicle (1) having a tiltable cab (2). Said boil-off pipe (20) is attached to the rear side of the cab (2) via a connection arrangement (30; 130; 230) of said arrangement (A1; A2; A3). Said connection arrangement (30; 130; 230) comprises a coupling configuration (32; 132; 232) for connecting the tank with the boil-off pipe (20) in a non-tilted position of the cab (2) and disconnecting the tank (10) from the boil-off pipe (20) in connection to the cab (2) being tilted, wherein the coupling configuration (32; 132; 232) in said non-tilted position of the cab (2) is arranged to be connected to a cab tilting operation arrangement (40; 140; 240) so as to prevent tilting of said cab (2). The present invention also relates to a connection arrangement assembly. The present invention also relates to a vehicle.