Electronic Compressor for Engine Startup Suction
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Solution Overview
Problem
Generator sets face challenges in achieving fast start and synchronization times due to fuel transport delay, which is exacerbated by the need to purge fresh air from the intake manifold before an air/fuel mixture can reach the cylinders, leading to increased engine startup time and inertia.
Innovation Solution
Incorporating an electronic compressor as an E-pump to create suction in the intake manifold, reducing fuel transport delay by increasing the mass flow rate of the air/fuel mixture, and utilizing a controller to manage the operation of the electronic compressor and bypass valve to optimize engine startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a traditional starting system is used, then the engine startup process is simple, but the fuel transport delay increases and the engine reaches operating speed slower
Solution Approach 1:
The electronic compressor is activated before the starter motor cranks the engine to pre-purge fresh air from the intake manifold. This preliminary action removes the fresh air that would otherwise delay fuel transport to the cylinders, allowing the engine to start faster and reach operating speed more quickly.
Solution Approach 2:
The electronic compressor acts as an intermediary device between the air supply system and the engine cylinders. It creates a controlled flow path that actively removes fresh air from the intake manifold, mediating the air/fuel mixture delivery to eliminate the purging delay that normally occurs during engine startup.
2Productivity
If an electronic compressor is added to purge fresh air, then the fuel transport delay is reduced, but the device complexity increases
Solution Approach 1:
The electronic compressor is designed to serve multiple functions: it acts as an E-pump during startup to purge fresh air and reduce fuel transport delay, and it can function as a normal air compressor during engine operation. This multi-functionality justifies the added device complexity by providing benefits both during startup and normal operation.
Solution Approach 2:
The electronic compressor is controlled by a controller that automatically manages its operation based on engine startup conditions. The system self-regulates by activating the compressor when needed for purging and deactivating it when the engine reaches operating speed, reducing the need for complex external control mechanisms.
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
The solution significantly reduces fuel transport delay, allowing the engine to start faster and reach operating speed more quickly, thereby improving the overall efficiency and speed of generator set startup.
Implementation Method 1
Incorporating an electronic compressor as an E-pump to create suction in the intake manifold, reducing fuel transport delay by increasing the mass flow rate of the air/fuel mixture
Data Source
AI summary
Systems and apparatuses include a system including an electronic compressor, a bypass intake coupled between an engine system of a generator set and the electronic compressor, a bypass outlet coupled between the electronic compressor and the engine system, and a valve positioned to selectively inhibit flow between the bypass intake and the bypass outlet during a starting operation.