Distributed Fuel Injection Equipment Rail-less Design
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Solution Overview
Problem
Existing high-pressure fuel equipment relies on a common rail, which is complex and inefficient, prompting a need for rail-less solutions that enable distributed fuel storage and efficient fuel injection in internal combustion engines.
Innovation Solution
The development of fuel injection equipment (FIE) with distributed high-pressure fuel storage in connecting pipes and injectors, where each injector is directly or in-line connected to a high-pressure source, allowing for efficient fuel distribution and internal storage within the injectors, eliminating the need for a common rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a common rail is used to store high-pressure fuel, then fuel distribution to multiple injectors is achieved, but device complexity and spatial requirements increase
Solution Approach 1:
The patent divides the centralized common rail into distributed storage locations within each injector body. Each injector contains its own high-pressure fuel storage chamber, eliminating the need for a separate common rail component. This segmentation reduces overall system complexity while maintaining the ability to distribute fuel to multiple injectors.
Solution Approach 2:
The patent extracts the fuel storage function from the common rail and integrates it directly into each injector. By removing the centralized rail component and placing storage capacity within individual injectors, the system eliminates the complexity of the rail while preserving fuel distribution capability.
2Quantity of substance
If a common rail is used, then fuel storage capacity is provided, but the engine layout becomes more complex
Solution Approach 1:
The patent merges the fuel storage function with the injector assembly itself. The high-pressure fuel storage chamber is integrated into the injector body, combining two previously separate functions (storage and injection) into a single unit. This eliminates the need for a separate common rail and simplifies the overall engine layout.
3Productivity
If injectors are directly connected to the high-pressure source, then fuel injection efficiency is improved, but each injector requires direct access to the source
Solution Approach 1:
The patent designs injectors with multi-functional inlet ports that can serve multiple purposes. The first inlet receives fuel directly from the high-pressure source, while the second inlet can receive fuel from neighboring injectors in a daisy-chain configuration. This universal inlet design allows direct connection for maximum efficiency while providing flexibility for alternative configurations.
Data Source
AI summary
Fuel injection equipment includes a high pressure fuel source able to flow high pressure fuel via connecting pipes to a plurality of injectors. The fuel injection equipment is high pressure fuel reservoir-less, a distributed storage for high pressure fuel being arranged in the pipes and in the injectors.