Electronic Injection Fuel Pump Control for Motorcycle Engines
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Solution Overview
Problem
Low-powered internal combustion engines for motorcycles face inefficiencies in electronic injection fuel feeding systems due to high electric power consumption and unnecessary work from fuel pumps, as they are designed to exceed actual fuel demand, leading to low energy efficiency and increased costs.
Innovation Solution
A control method for an electronic injection fuel feeding system utilizing a fuel pump with a variable volume pumping chamber, one-way valves, and an electromagnetic actuator, adjusted by an electronic control unit to optimize fuel delivery based on engine demand, ensuring constant pressure and minimizing excess fuel recirculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a constant flow rate fuel pump is used to ensure sufficient fuel supply, then fuel delivery reliability is improved, but electric power consumption increases and energy efficiency deteriorates
Solution Approach 1:
The fuel pump operates in a dynamic manner by alternating between pumping strokes and idle strokes based on real-time fuel pressure feedback. The electronic control unit adjusts the duty cycle of the fuel pump motor, enabling it to deliver fuel only when pressure drops below a threshold, thereby matching supply to actual demand and reducing unnecessary energy consumption while maintaining reliable fuel delivery.
Solution Approach 2:
The fuel pump performs periodic pumping actions rather than continuous operation. The system uses a feedback mechanism where the electronic control unit monitors fuel pressure and activates the pump in periodic cycles only when needed, creating an intermittent operation pattern that significantly reduces average power consumption while ensuring fuel supply reliability through timely periodic replenishment.
2Stability of the object's composition
If a pressure regulator with recirculation channel is used to maintain constant fuel pressure, then fuel feeding pressure stability is improved, but device complexity and cost increase
Solution Approach 1:
The invention extracts and eliminates the pressure regulator component with its recirculation channel from the fuel feeding system. Instead of using a dedicated pressure regulation device, the system relies on the electronic control unit to manage fuel pump operation based on pressure feedback, thereby simplifying the mechanical structure while maintaining pressure stability through intelligent control.
Solution Approach 2:
The system implements a feedback control mechanism where pressure sensor data is continuously monitored by the electronic control unit, which then adjusts fuel pump activation accordingly. This closed-loop feedback replaces the need for mechanical pressure regulators, achieving stable fuel feeding pressure through electronic control rather than complex mechanical recirculation systems.
3Quantity of substance
If a fuel pump dimensioned for maximum consumption is used, then fuel supply capability is improved, but energy efficiency deteriorates due to unnecessary work on excess fuel
Solution Approach 1:
The system changes the operational parameters of the fuel pump by varying its duty cycle and activation frequency based on actual fuel consumption demands. The electronic control unit adjusts the pump's working parameters dynamically, enabling a single pump to serve multiple operational requirements from low to high demand without the need for oversized continuous operation, thereby eliminating energy waste on excess fuel delivery.
4Object-affected harmful factors
If electronic injection feeding is used to meet emission standards, then emission compliance is improved, but electric power consumption increases
Solution Approach 1:
The fuel feeding system operates in a self-regulating manner where the electronic control unit autonomously manages fuel pump activation based on real-time pressure feedback from the fuel rail. This self-service control mechanism ensures precise fuel delivery for emission compliance while minimizing unnecessary pump operation, thereby reducing overall electric power consumption compared to systems requiring continuous high-power pumping.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise adjustment of fuel feeding pressure, reducing electric energy consumption and enhancing energy efficiency while maintaining optimal fuel injection conditions, thus addressing the inefficiencies in existing systems.
Implementation Method 1
an actuator device which imparts a reciprocating motion on the piston and displays an electromagnetic actuator to actuate the piston during a step of delivering
Data Source
AI summary
A control method of an electronic injection fuel feeding system for an internal combustion engine and displaying at least one injector and a non-continuous flow rate fuel pump actuated by a an actuator device; the control method includes the steps of: determining the desired fuel amount which must be injected at each cycle of the internal combustion engine; driving the injector for injecting the desired fuel amount at each cycle of the internal combustion engine; determining an optimal pumping frequency of the actuator device of the fuel pump according to the desired fuel amount which must be injected at each cycle of the internal combustion engine; and actuating the actuator device of the fuel pump at the optimal pumping frequency.