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Outboard jet drive marine propulsion system and control lever therefor

A technology for marine and jet pumps, which is applied to ship propulsion, propulsion components, ship components, etc., and can solve problems such as the inability to fully realize the efficiency of jet propulsion

Inactive Publication Date: 2007-08-08
斯沃德船舶科技公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The outboard jet unit designed by the applicant is satisfactory, however it does not fully realize the efficiency of jet propulsion

Method used

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  • Outboard jet drive marine propulsion system and control lever therefor
  • Outboard jet drive marine propulsion system and control lever therefor
  • Outboard jet drive marine propulsion system and control lever therefor

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Embodiment Construction

[0051] Referring to FIGS. 1-3 , an outboard jet drive unit 10 is shown attached to the hull of a watercraft 11 on a transom 12 . The jet drive unit 17 includes a housing 13 having a platform 14 mounted therein and having a plurality of flexible motor mounts 15 attached to the platform 14 . An internal combustion engine 16 is mounted to an engine mount 15 on a table 14 . The engine 15 is preferably a diesel engine with a turbocharger with intercooler, but can also be a petrol engine, and is preferably a conventional car or truck engine. Jet drive unit 17 is mounted to below platform 14 of housing 13 and attached to front end 18 of housing 13 . Housing 13 is sealed against water intrusion therein and is sealed between platform 14 and housing 13 to prevent water intrusion and oil or engine antifreeze to escape therethrough.

[0052]The main prior art configuration of inboard jet boats is an in-line setup, that is, the engine is connected in-line to the jet drive; this allows th...

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PUM

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Abstract

A jet pump for an outboard propulsion marine engine includes a support member and at least one impeller blade extending helically from said support member. At least one induction blade extends helically from said support member. A stator having a volume reduction member is disposed downstream of the blades. The jet pump is supported in a housing having a stepped profile to reduce drag. A single lever controls both the speed and direction of the jet stream exiting the stator.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 60 / 574,019, filed May 25, 2004, and US Provisional Application No. 60 / 653,652, filed February 16, 2005, the entire disclosures of which are hereby incorporated by reference. Background technique [0003] The present invention relates to outboard jet drive marine propulsion systems. The present invention relates to an outboard jet drive for a watercraft, and more particularly to an outboard jet drive having an engine and a jet drive mounted within a housing that is removably attached to a boat. [0004] There have been several types of outboard jet drives proposed for watercraft, but most resemble outboard motors where the outboard motor propeller and downlink unit are replaced by jet drives. The jet drive includes a jet pump located in the downlink unit operative to provide propulsion for the watercraft. As opposed to propellers, there are advantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H11/08B63H11/10
Inventor 威廉·劳森斯科特·波塔贾森·希尔伦纳德·希尔
Owner 斯沃德船舶科技公司