Electronic Fuel Injection Unit for Two-Stroke Engine
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Solution Overview
Problem
Current carburetors in two-stroke engines for karts are imprecise, requiring complex maintenance and tuning, leading to inefficiencies in fuel delivery and increased emissions.
Innovation Solution
An electronic fuel injection system with two injectors and a control unit, integrated with sensors for precise fuel delivery based on engine conditions, replacing the carburetor with a more efficient and easier-to-maintain setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a carburetor is used for fuel delivery, then the device is simple in structure, but the fuel delivery precision is poor and maintenance complexity increases
Solution Approach 1:
The patent replaces the mechanical carburetor system with an electronic fuel injection system that uses electronic control units, sensors, and electronically controlled injectors. This substitution enables precise digital control of fuel delivery based on engine parameters (temperature, pressure, throttle position, crank angle) while eliminating the imprecise mechanical mixing mechanism of the carburetor.
Solution Approach 2:
The system dynamically adjusts fuel injection parameters (timing, duration, quantity) based on real-time sensor data including engine temperature, pressure, throttle opening, and crank position. The control unit modifies injection parameters through software algorithms to optimize fuel delivery precision across different operating conditions.
2Productivity
If a carburetor is used, then the device structure is simple, but maintenance requirements increase and operational efficiency decreases
Solution Approach 1:
The electronic fuel injection system replaces the carburetor's mechanical adjustment mechanisms with electronically controlled injectors and a microprocessor-based control unit. This eliminates the need for manual tuning and complex mechanical maintenance while improving engine efficiency through precise electronic control of fuel delivery.
Solution Approach 2:
The system incorporates self-diagnostic capabilities through sensors that continuously monitor engine parameters and injection performance. The control unit automatically adjusts injection parameters based on sensor feedback, enabling the system to self-optimize without external intervention and reducing maintenance requirements.
3Measurement precision
If electronic sensors and control units are added for precise fuel injection, then fuel delivery precision improves, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it processes signals from all sensors (temperature, pressure, throttle position, crank angle), calculates optimal injection parameters, controls both injectors, and monitors system status. This multi-functionality consolidates what would otherwise require separate components into a single integrated control unit.
Solution Approach 2:
The patent integrates the control unit, sensors, and injector control circuits into a unified electronic fuel injection system. The sensors are positioned to directly monitor combustion chamber conditions, and their signals are immediately processed by the control unit which directly actuates the injectors, creating a tightly integrated system that minimizes complexity despite the addition of electronic components.
4Volume of moving object
If the injection unit is integrated directly onto the engine block, then system compactness improves, but manufacturing precision requirements increase
Solution Approach 1:
The injection unit is nested directly onto the engine block's existing structure, utilizing the engine block as part of the mounting framework. The control unit and sensors are integrated within the existing engine compartment space, and the injectors are positioned to directly interface with the combustion chamber, creating a compact nested arrangement that minimizes external components.
Data Source
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AI summary
Injection unit for fuel injection comprises an injection unit body (1) including an interior channel, wherein two injectors (2) for injecting fuel into the interior channel of the injection unit (1) body are placed in the injection unit body (1), a throttle (3) connectable to an acceleration regulation system (4) for regulating the flow of the mixture into the combustion chamber, and air temperature and pressure sensor for measuring pressure conditions and temperature.