Multi-Engine Urea Injection Common Rail Pressure Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing urea injection systems face challenges in controlling pressure and complexity in installation and control, especially when treating the exhaust of multiple engines, due to the need for high-pressure resistance and independent exhaust pipe configurations.
Innovation Solution
A urea injection system comprising a fluid conveying apparatus, a common rail with pressure detection and adjustment mechanisms, and multiple nozzles connected to independent exhaust pipes, allowing for simultaneous treatment of multiple engines with centralized control and pressure management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a cylindrical common rail structure is adopted to withstand high pressure, then pressure resistance is improved, but device complexity increases when adapting to multiple engines
Solution Approach 1:
The common rail is designed with a universal structure that can serve multiple engines simultaneously. The rail includes multiple outlet ports that can be connected to different exhaust pipes of different engines, allowing one common rail to perform the function of multiple separate rails, thereby reducing system complexity while maintaining pressure resistance capabilities
Solution Approach 2:
The common rail is segmented into multiple outlet ports and connection interfaces that can be independently configured for different engines. This segmentation allows the system to adapt to different engine configurations without requiring complete redesign, maintaining structural integrity while enabling multi-engine application
2Reliability
If independent exhaust pipe configurations are used for each engine, then treatment effectiveness is improved, but installation complexity increases
Solution Approach 1:
Multiple exhaust pipe connections are merged into a single common rail structure. The common rail integrates multiple outlet ports that connect to different exhaust pipes, combining what would otherwise be separate injection systems into one unified unit, thereby maintaining independent treatment capability while simplifying installation
Solution Approach 2:
The common rail acts as an intermediary component between the fluid conveying apparatus and multiple exhaust pipes. It mediates the distribution of urea solution to different engines while maintaining independent control capabilities, simplifying the overall system architecture without compromising treatment effectiveness
3Productivity
If centralized pressure management is implemented, then system efficiency is improved, but control complexity increases
Solution Approach 1:
The pressure detection apparatus and pressure adjustment apparatus are designed as universal components that manage pressure for the entire multi-engine system through a single common rail. These components perform multiple pressure control functions simultaneously for different engines, improving efficiency without requiring separate pressure management systems for each engine
Solution Approach 2:
The pressure detection apparatus provides real-time pressure feedback from the common rail, which is processed by the control unit to adjust the pressure adjustment apparatus. This feedback mechanism enables centralized pressure management that automatically adapts to different engine operating conditions, maintaining system efficiency while keeping control complexity manageable through automated regulation
Data Source
AI summary
A urea injection system comprises a fluid conveying apparatus used for extracting a urea solution from a urea tank, several nozzles indirectly connected to the fluid conveying apparatus, and a controller used for controlling the urea injection system. The urea injection system is adapted to process exhaust gas of a plurality of engines at the same time. The nozzles comprise a first nozzle used for injecting a urea solution to a first exhaust pipe of a first engine and a second nozzle used for injecting the urea solution to a second exhaust pipe of a second engine. A plurality of nozzles respectively corresponding to a plurality of engines is arranged in the urea injection system, so as to process exhaust gas of the plurality of engines at the same time by using only one urea injection system.