EFI Throttle Body with Multi-Bore Segmentation for Carburetor Retrofit
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Solution Overview
Problem
Existing carburetor systems are mechanically or hydraulically operated, leading to inefficiencies and inconsistent performance due to variations in temperature, pressure, and engine conditions, and they lack the improved performance and efficiency of electronic fuel injection (EFI).
Innovation Solution
The development of an Electronic Fuel Injection Throttle Body Assembly with bores of differing sizes, allowing for efficient operation in various conditions, and featuring a throttle arrangement and plumbing to support high-performance modes, with fuel injectors and an electronic control unit for precise fuel management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-size bore throttle body is used, then the design is simple and space requirements are minimized, but the engine cannot operate efficiently across varying performance modes and atmospheric conditions
Solution Approach 1:
The throttle body is divided into multiple bores of different sizes (e.g., two large bores and two small bores) that can be independently controlled by separate throttle valves. This segmentation allows the system to adapt to varying engine performance requirements by opening only the necessary bores for current operating conditions, thereby improving versatility without excessive complexity
Solution Approach 2:
The system incorporates electronically controlled throttle valves that can dynamically adjust the opening degree of each bore independently. This dynamic control enables real-time adaptation to changing atmospheric conditions, engine load, and performance requirements, allowing the throttle body to optimize airflow for both efficient cruising and high-performance modes
2Measurement precision
If electronic fuel injection components are added to a carburetor replacement system, then fuel management precision and engine performance are improved, but the device complexity and space requirements increase
Solution Approach 1:
The system replaces the mechanical carburetor float-and-needle mechanism with electronically controlled fuel injectors positioned at the throat of each bore. This substitution provides precise electronic control over fuel delivery timing and quantity, improving fuel management precision while eliminating the complexity of mechanical carburetor components
Solution Approach 2:
The throttle body assembly integrates multiple functions into a single unit: airflow control through multiple bores, fuel injection for multiple cylinders, electronic sensing, and actuation. This multi-functionality consolidates what would otherwise require separate components, improving precision without proportionally increasing overall system complexity
Data Source
AI summary
Present embodiments related to throttle body fuel injection systems intended to replace existing carburetors. More specifically, present embodiments relate to retrofitting carbureted engines with electronic fuel injection (EFI) which may be mounted on a manifold of an internal combustion engine and have bores of differing sizes and other characteristics which allow operation of such arrangement.