Jet Pump with Integrated Exhaust and Vibration Isolators
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Solution Overview
Problem
Conventional jet pumps for watercraft require extensive installation time, create leakage opportunities, and suffer from alignment and vibration issues, limiting compatibility across different watercraft sizes.
Innovation Solution
A compact modular 'plug and play' jet pump configuration with an integrated exhaust system and vibration isolators, where the propulsion and exhaust systems are positioned externally to the hull, reducing the number of holes needed in the hull and enhancing compatibility across various watercraft sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional jet pumps are installed with separate exhaust systems, then exhaust can be directed externally, but installation time increases significantly and multiple holes through the hull are required
Solution Approach 1:
The exhaust system is integrated with the propulsion system by combining the exhaust conduit and rotatable shaft into a single coaxial structure. This merging eliminates the need for separate exhaust system installation and reduces the number of hull penetrations required, directly addressing the technical contradiction between achieving exhaust function and reducing installation time.
Solution Approach 2:
The integrated exhaust and propulsion assembly serves multiple functions through a single hull penetration. The coaxial structure allows both the propeller shaft and exhaust gases to pass through the same hole, making the system multi-functional and reducing installation complexity.
2Ease of operation
If multiple holes are drilled through the hull for jet pump components, then all necessary connections can be made, but leakage opportunities increase
Solution Approach 1:
By merging the exhaust conduit and propulsion shaft into a single coaxial assembly that passes through one hull penetration, the number of potential leakage points is reduced. The integrated design ensures that both exhaust and propulsion functions are achieved through minimal hull openings.
3Volume of moving object
If jet pump components are positioned internally, then space is utilized efficiently, but alignment issues and vibration problems occur at the hull interface
Solution Approach 1:
The jet pump assembly is extracted from the traditional internal-only configuration and positioned externally to the hull. This extraction eliminates the hull interface that causes alignment issues and vibration problems, while the coaxial integration of exhaust and propulsion systems maintains compact dimensions.
4Power
If conventional jet pumps are designed for specific watercraft sizes, then optimal performance is achieved for that size, but compatibility across different watercraft sizes is limited
Solution Approach 1:
The integrated coaxial design creates a universal assembly that can be adapted to different watercraft sizes. The compact modular structure allows the same basic design to be scaled and configured for various boat types, enhancing compatibility while maintaining propulsion performance.
Data Source
AI summary
A jet pump includes a propulsion system including an impeller coupled to a rotatable shaft configured to receive torque from an engine and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the exhaust system is integrated with the propulsion system. In another embodiment, a jet pump includes a propulsion system including a water intake configured to take in water from a body of water, the water intake including an intake grate and an intake base, and an exhaust system including an exhaust flow path configured to direct exhaust from the engine to an exterior of the watercraft, wherein the intake base of the water intake is configured to be coupled to an exterior surface of a hull of the watercraft.