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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.
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.
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. Click on TECH-LINK for see schematic diagram
MF2 inline fuse (Blue)
Inline fuse rated at 6A for use with the MF2wire loom.
FASTERNERS 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.
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