IntelliJet Home   IntelliJet Technology   Virtual Reality   Safety - Environment
  Features - Benefits   Electronically Controlled   In the Media   Investors-IntelliJet News
  Development History   Licensing / JV Ops   IntelliJet Links   Contact Us
  About the Founder   QuickJet 1st Generation   Questions  
                           New! IntelliJet Blog: www.power.iiJet.com      
   Development History

     Jet Boat Efficiency

 

The System and How It Works
Why It All Works Together
Company History

Why It All Works Together

Bigger jets are desirable because they create higher thrust.  But the bigger the jet, the more power that is lost in the ordinary inlet duct.  This power loss has to be made up by the motor and the pump.

The adjustable inlet duct reduces this power loss. And, as the inlet duct becomes more efficient, it increases pressure on the nozzle, which results in higher flow through the system.

But, higher flow through the system results in reduced pump efficiency. Hence the need for the variable nozzle to regulate the system flow for pump efficiency.

Summary Using the combination of these three innovations means a high volume of water, an efficient inlet duct and an efficient pump operation under all operating conditions.  


 

Essential Performance Features

  • Larger flow
         
    for increased thrust.
  • Intelligent inlet
         
    for power recovery.
  • Adjustable nozzle
         
    for pump efficiency.

Practical Engineering Features

  • Inlet molded in boat hull.
  • Flexible motor placement.
  • Engineered for ease
          of installation.

 

The System and How It Works.                  Back to Top


 

Larger Jet Size  
increases propulsion efficiency using technology demonstrated in development of larger jets in aerospace industry.

Duct and nozzle under full power at 15 mph

Full Throttle
at 15 mph



 

Intelligent Inlet Duct
automatically adjusts to recover the power of the incoming water at all planing speeds and at all throttle positions.
 

Full Throttle
 at 35 mph




Variable Rectangular Steering Nozzle
allows simultaneous control of nozzle area and steering direction to maintain peak efficiency over wide ranges of boat speed, pump shaft speed and steering vectors.
 

Duct and nozzle under full power at 50 mph 

 

Full Throttle at 50 mph


Company History

The development of IntelliJet Marine, Inc. began when current president, Jeff Jordan, was considering the purchase of a manufacturer of aluminum jet river boats. Mr. Jordan had previously spent ten years in the design and manufacture of small commercial hydroelectric systems, during which time he observed several causes of hydraulic inefficiency in the marine jet propulsion systems.

Any such cause of inefficiency is rigorously attacked in the hydroelectric business because it translates into power not generated and revenue lost. In jet boats it translated into the need for a flatter hull, a bigger motor and a bigger fuel tank.

 In jet boats (inefficiency) translated into the need for a flatter hull, a bigger motor and a bigger fuel tank.

The application of hydroelectric design principles to jet boats resulted in three broad patents covering the inlet, pump and nozzle control conditions that must be maintained for efficient marine jet propulsion. 

 

Noz3-72.jpg (10051 bytes)

The Variable Nozzle

The variable rectangular steering nozzle allows simultaneous control of nozzle area and steering direction to maintain peak efficiency over wide ranges of boat speed, pump shaft speed and steering vectors.



Back to Top


 
 

For problems with web site, contact -  info "at" intelliJetmarine.com
Copyright 2000 - 2015  Webmaster MartyQT