For Watercraft that work like your Car, You need Intelligent propulsion. Jeff Jordan, President...

For Watercraft that work like your Car,You need Intelligent propulsion.

Jeff Jordan, PresidentIntelliJet Marine, Inc.

Supported by

Art Anderson Associates

2 Jun 08 2

What If . . .

What if your car had only one gear?

It would work like a Model “T” . . . . . . Or like a

boat.

You couldn’t change gears to operate more efficiently at different speeds or when you had a greater load.

You couldn’t use a computer to shift gears to minimize fuel consumption at your current speed and load.

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Now . . . imagine a boat that works like your car.

Where a computer controls the motorand the transmission,

so the system operates at peak efficiency over wide ranges of

acceleration, speed, and load.

This is what IntelliJET provides, and more . . . . .

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This Presentation will show you

What the benefits of IntelliJet are

Why IntelliJet works

How IntelliJet works

How IntelliJet provides its benefits

2 Jun 08 5

What the Benefits of IntelliJet Are

Very high fuel efficiency Both high-speed and heavy-load capable Maneuverable at all speeds and conditions Size and weight savings High reliability and maintainability Safe operations Shallow draft capability Stealth characteristics

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Why IntelliJet Works

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Formula Discussion

• Thrust force is proportional to the dynamic power of the jet divided by the velocity of the jet.

• To double the force, you can either double the power or reduce the velocity by 50%.

• Marine propulsion has traditionally relied on a bigger motor.• IntelliJet concentrates on reducing the velocity, and it is in good

company.• Reducing the velocity has been a winning strategy for the increasingly

high-bypass turbofans on Boeing’s airplanes. The higher the bypass ratio, the lower the velocity of the jet, the lower the noise, and the lower the fuel consumption.

• Modern jet fighters commonly use variable bypass turbojets and variable nozzles to reduce the jet velocity.

• Even NASA’s rockets employ convergent/divergent nozzles to reduce velocity and maximize thrust.

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Why IntelliJet Works

Design Objectives

Operate the motor efficiently

Maintain pump efficiency

Maintain inlet efficiency

Minimize jet velocity

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How IntelliJet Works

Design Features

Variable-pitch spherical pump

Variable nozzle

Variable inlet

Microcontroller

Minimizes jet velocity.

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Variable-pitch Propeller Pump

Continuously Variable Power Transmission

Reduces velocity up to 50% - doubles thrust

Quick, smooth shifting forward/neutral/reverse

Eliminates need for reversing “bucket”

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Variable Rectangular Steering Nozzle

Computer maintains efficient pump operation by adjusting nozzle area.

Provides steering in both forward and reverse.

Allows elimination of reversing bucket.

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How IntelliJet Provides Its BenefitsBoth High Speed and Heavy Load Efficiency

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Explanation of Graph• The previous graph illustrates the selection of a

conventional marine jet to meet boat speed requirements in a given application. The selected “Conventional Jet Thrust” curve is adequate to the speed requirements. This curve is approximate to the full power of the motor and is the only line on which the conventional jet system operates the motor efficiently with its one gear.

• The propulsion system is actually required to operate anywhere in the cross hatched area. Running the conventional jet in the lower part of the area is like driving your car down the highway in second gear.

• The IntelliJet operates efficiently over the whole hatched area by minimizing motor rpm, just like a continuously variable transmission in a Toyota Prius or Ford Taurus. In minimizing rpm it also minimizes jet velocity to achieve the highest possible thrust from any give power input.

2 Jun 08 19

How IntelliJet Provides Its Benefits

Both High-speed and Heavy-load Efficiency

The embedded microcontroller program regulates:

The pump to maintain motor efficiency and low velocity.

The nozzle to maintain pump efficiency.

The inlet to maintain recovery efficiency.

So the total system operates at peak efficiency at all speeds and under all loads and accelerations.

2 Jun 08 20

Motor efficiency increased 20% +/- Exhaust emissions minimized Twice as much thrust for any given motor power Fuel consumption vs. fixed-vane pump

Up to 20% reduction in motor fuel consumption 50% reduction in power demand by reduced velocity Up to 60% reduction in fuel consumption

Advantage reduced with higher boat speed


Both High-speed and Heavy-load Efficiency

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Size and Weight Savings

Larger diameter pump, yet smaller envelope without a reversing bucket

Inlet molded or welded into hull Eliminates casting and machining of massive inlet duct

Thrust bearing in stator behind propeller

Regular inboard motor mounting

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How IntelliJet Provides Its BenefitsHigh Maneuverability at All Speeds

Familiar single-handle control or any other

Shift quickly without reducing RPM

Quick steering response Multiple program selection – set it & forget it modes

Maximum performance when detection is unavoidable Suppress Cavitation Noise when avoiding detection Maximum fuel economy for cruising

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How IntelliJet Provides its Benefits

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How IntelliJet Provides Its BenefitsHigh Reliability and Maintainability

Out of harm’s way, like a conventional jet

Bearings immersed in pressurized oil

Radial labyrinth around mechanical oil seal

Crowned splines vs. U-joints on shaft

Mechanical water seal vs. packing gland

Modular pump units quickly exchanged

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Safe Operations Enclosed Propeller

No Reversing Bucket

Nothing protrudes below the hull

No Pinch points

Shallow Draft

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How IntelliJet Provides Its BenefitsStealth Characteristics

Cavitation suppressed at operating speeds

Jet velocity is low relative to the wake No rooster tail Reduced wake luminescence Reduced noise

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For Watercraft that work like your Car,You need Intelligent propulsion.

Very high fuel efficiency Both high-speed and heavy-load capability Maneuverability at all speeds and conditions Size and weight savings High reliability and maintainability Safe Operations Shallow draft capability Stealth characteristics

IntelliJet is the Intelligent Propulsion that Provides:

Jeff Jordan, PresidentIntellijet Marine, Inc.

www.iiJet.com

Supported by

Art Anderson Associates

For Watercraft that work like your Car, You need Intelligent propulsion. Jeff Jordan, President...

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