Installer's handbook - 1/3 Types of installation - 2/3 Software guide ...

Picture 26 shows the typical
trend of current in the injector. The
shutter is opened by applying all
the battery voltage during the peak
phase; then the voltage which supplies
the injector becomes the one
called “hold”, as it is sufficient to
keep it open for the necessary time.
The shutter opening time is very
short; it allows having a good control
on the injected gas even in
small dosages, like in the idling
conditions. The gas passage sections
allow a correct supply even in
the more powerful vehicles nowadays
available on the market.
To better meet the needs of a
fine idling control and a good supply
at high r.p.m. there are two
kinds of injectors, with different passage
sections.
The injectors (picture 27) are
distinguishable by a coloured mark,
placed on the label, that can be
Blue for the Keihin injectors Normal
type, Orange for the Keihin injectors
Max type and Yellow for Keihin
Super Max ones.
Picture 28 depicts the powers
that can be supplied by the Keihin
injectors depending on the used
reducer**.
4.12 GAS TEMPERATURE
AND PRESSURE SENSOR
This new concept sensor with a
small body and integrated inside the
connector also includes the P1 pressure
sensor and the gas temperature
one. As already described in the
previous paragraph, this sensor has
to be installed directly on the injectors
rail for Sequent Fastness applications.
In this position the pressure and
gas temperature measurement is
more precise and allows a quick
intervention for gas carburation corrections.
4.13 GAS PRESSURE
AND MANIFOLD
ABSOLUTE PRESSURE
LPG feeding capabilities
Genius 800 Genius 1200 Genius 1500 Genius Max
Inj. Sup. Max Type Asp. - - 35 kW/cil. 35 kW/cil.
Superch. - - 42 kW/cil. 42 kW/cil.
Inj. Max Type Asp. - 26 kW/cil. 30 kW/cil. 30 kW/cil.
Superch. - 32 kW/cil. 36 kW/cil. 36 kW/cil.
Inj. Normal Type Asp. 17 kW/cil. 21 kW/cil. - -
Superch. 22 kW/cil. 26 kW/cil. - -
CNG feeding capabilities
GeniusM 2000 GeniusM 2500
Inj. Sup. Max Type Asp. - 27 kW/cil.
Superch. - 29 kW/cil.
Inj. Max Type Asp. 20 kW/cil. 23 kW/cil.
Superch. 23 kW/cil. 26 kW/cil.
Inj. Normal Type Asp. 18 kW/cil. 20 kW/cil.
Superch. 20 kW/cil. 23 kW/cil.
(MAP) SENSORS
P1-MAP device (picture 30 and
31) contains two sensors: the P1
sensor that measures the absolute
pressure present in the injectors rail
and the manifold absolute pressure
(MAP) that gives to the Fly SF ECU
the information on the absolute
pressure present inside the airintake
manifold.
The device is pre-amplified so
21
Picture 27
Keihin injectors type
“Normal”, “Max” and
“Super MAX”
Picture 28
** The data in the
following chart are
merely indicative.
For the selection of
the type of injectors
please refer to
“Types of
Installation” guide.
Picture 29
Pressure and gas
temperature sensor
inside the Sequent
Fastness rail body
that the signal is not easily disturbed.
The pre-cabled connection
makes the installation very simple.
4.14 MANIFOLD ABSOLU-
TE PRESSURE (MAP - RAIL
SEQUENT FASTNESS)
This new sensor (picture 32) is
used for Sequent Fastness only. It
is light, very small and easy to be
installed to the body.