Aquamist Water Injection System 2s Universal

This is the ultimate water injection system: its function is directly comparable to a standard car's fuel injection system, except it controls water-flow. In addition, it has diagnostic circuitry designed to detect blocked water-jets and cut pipes. A special output link from the ECU can inform other systems in the event of a fault condition, so boost-pressure can be lowered to minimise engine damage. A pre-pressurized system enables instant response on demand.

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Water Pump: Specially designed and manufactured by ERL for the sole purpose of pumping water, its delivery rate is small but generated at very high pressure: a minimum differential pressure of 3 bar is necessary for the ERL atomising jet. There are no mechanical links between the piston and the drive motor: the movement of the special magnetic stainless piston is induced by a powerful magnetic field generated by the on-board electronic controller. Flow and pressure characteristics are controlled by varying the frequency and the duration of the electrical pulse fed to the solenoid.

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MF2: MF2 is the brain of the system, ultimately responsible for the vital functions of metering the water delivery rate. The MF2 uses incoming RPM and pressure signals from the sensors in the engine bay and compares them with a pre-programmed map set by the user. After several signal conditioning stages it finally arrives at the pulse-width-modulator stage, and the output signal is then converted into digital pulses before being sent to the electro-magnetic water valve.

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Manifold Block: The electro-magnetic water valve and a water pressure switch sit on the top of the anodised aluminum block. The valve controls the flow rate and the pressure switch (normally set to 5 bars) limits the water pressure in the event of the pump's malfunctioning (the pump is capable of reaching a pressure of 12 bars!). There are two additional inlet ports: one for priming the water pump on start-up, the other for a remote water-pressure gauge.

Adjustable Pressure Switch: This switch determines the point where the system starts to inject. It is normally fitted to the vacuum side of the inlet manifold (2D mode). For applications where load signal (throttle angle sensor) or manifold absolute pressure sensor (MAP sensor) are available, the MF2 can read these signals and perfom 3-D mapping functions.

Stainless In-Line Water Filter: Apart from perfoming the normal function, this filter can be back-flushed and re-used again and again. In hard water areas, clean the filter in a small glass of diluted household lime-remover occasionally.

Water Jet: The jet is made of nickel-plated brass with two spiral grooves cut into the centre insert. Water travelling through these grooves picks up a swirling motion before leaving the small hole on the tip, causing an atomising effect, turning the water into a fine mist: of course a pressure of at least 3 bar is required. Jet sizes from 0.5mm to 1.0mm are available in 0.1mm increments.

Fused Loom (blue): A high quality splash-proof plug, with seals, hosts eleven UL and CSA approved wires for connections to the intended equipment/sensors. All mating pins of the socket/plug are gold-plated, all capable of carrying 5 amps of electrical current. An additional pair of wires supplies a stablised output voltage of 5 volts for driving a MAP (manifold absolute pressure) sensor.

MF2 In-Line Fuse (blue): Inline fuse rated at 6A for use with the MF2wire loom.

Fasteners: All fasteners are made with high quality 316(A4) grade stainless steel: lower grade stainless steel does suffer from corrosion and pitting under the harsh environments of the engine bay.

Instruction Manual: A 20-page comprehensively-written instruction manual discusses every aspect of the MF2 in great detail, including over 20 schematic diagrams and illustrations.

Fused Loom (pump): The 3-wire loom is equipped with a 10A inline fuse. Wire size is very important as the pump draws large currents at start-up of every stroke (45 times/sec.): make sure a 30A wire is used if extension is necessary.

Kit Includes:
-Magnetic piston pump (race version)
-3-30psi adjustable Pres.Sw. N/opened (preset @10psi)
-Inline 100 micron stainless filter
-1.5 meter of translucent nylon hose (4mm O/D)
-1.5 meter of translucent nylon hose (6mm O/D)
-Water pump loom with 15A inline fuse (std.pump) (4)
-M6 x 16mm Stainless nut, bolt and washer
-M8x0.75mm tap for water jet
-0.5mm water jet 4mm hosetail 180cc/m @5bar
-0.6mm water jet 4mm hosetail 225cc/m @5bar
-0.7mm water jet 4mm hosetail 260cc/m @5bar
-20 page manual and installation sheet
-40A Power Relay for independent switching
-MF2 mappable driver
-Blue loom for water injection
-Single channel WI manifold

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