Integrated Pump Module for Engine Black-Start Control Oil Pressure
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Solution Overview
Problem
Piston engines face challenges in starting without external power, particularly in black start scenarios where stored energy is needed for pressurizing control oil for critical components like variable intake and exhaust valve systems, and existing solutions require complex modifications and external energy sources.
Innovation Solution
A pump module that pressurizes control oil by utilizing the lubricating oil system, featuring a body with connection surfaces for oil sump and pipe integration, a pump chamber, check valve, actuation chamber, and piston device, allowing pressurization using stored energy like compressed air, and minimal piping modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate control oil system with external power source is used for black start, then reliable pressurization of control oil is achieved, but device complexity and space requirements increase
Solution Approach 1:
The invention merges the control oil pressurization function with the existing lubricating oil system by integrating a pump module directly into the oil sump. The pump module uses the lubricating oil as both the lubricant and the pressurization medium, eliminating the need for separate control oil tanks and external power sources while maintaining black start capability.
Solution Approach 2:
The lubricating oil system is given multiple functions: it serves both as the lubrication system for engine components and as the pressurization system for control oil delivery during black start. The pump module utilizes the kinetic energy of the lubricating oil flow to pressurize and deliver control oil to critical components without requiring external power.
2Stress or pressure
If external power sources are used for pressurizing control oil during black start, then sufficient pressure is achieved, but the system requires more space and external connections
Solution Approach 1:
The pump module is integrated directly into the oil sump, combining the control oil pressurization function with the existing lubricating oil system. This eliminates the need for separate external power sources and control oil tanks, significantly reducing space requirements while maintaining sufficient control oil pressure for black start operation.
3Reliability
If a complex piping system is used to supply control oil separately from lubricating oil, then control oil flow is ensured, but ease of installation and maintenance deteriorates
Solution Approach 1:
The invention eliminates complex separate piping by merging the control oil supply function into the existing lubricating oil system. The pump module is integrated into the oil sump and uses the lubricating oil flow to pressurize and deliver control oil through existing oil passages, significantly simplifying installation and maintenance while ensuring reliable control oil supply during black start.
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
Enables efficient pressurization of control oil for black start conditions with direct utilization of lubricating oil flow, reduced space requirements, and minimal system changes, ensuring reliable engine start-up without external power.
Implementation Method 1
a piston device (33a, 33b) for pressurizing the oil in the pump chamber (27a, 27b) by means of a movement of the piston device, when pressure is applied on the second piston surface (33d, 33f) of the piston device
Implementation Method 2
a check valve (29) that is arranged between the oil channel (26) and the pump chamber (27a, 27b) for preventing flow from the pump chamber (27a, 27b) into the oil channel (26)
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The pump module (20) for pressurizing control oil of an engine (1) for enabling a black start comprises a body (21) having an oil channel (26) for flow between an oil pipe (17) and an oil sump (11), a pump chamber (27a, 27b), a fluid channel (28) connecting the pump chamber (27a, 27b) to the oil channel (26), a control oil outlet (30), an actuation chamber (31a, 31b) coaxial with the pump chamber (27a, 27b), an inlet (32) for introducing pressure medium into the actuation chamber (31a, 31b), and a piston device (33a, 33b) having piston surfaces (33c, 33d, 33e, 33f) delimiting the pump chamber (27a, 27b) and the actuation chamber (31a, 31b), the pump module (20) being configured to pressurize the oil in the pump chamber (27a, 27b) when pressure is applied on a second piston surface (33d, 33f) of the piston device (33a, 33b). (Fig. 4)