LPG SEQUENTIAL SYSTEM
The
LPG SEQUENTIAL system is an electronically controlled gas
feeding system that can be installed in all vehicles with
sequential injection system. The system is a Multipoint
sequential one and is controlled by an ecu that controls
the gas injection sequence and the timing. The gas is injected
through the rails of injectors directly into the suction
pipes thus obtaining a particularly precise mix to optimise
the combustion process. The gas injection timing is obtained
by exploiting the petrol injection timing of the original
cpu of the vehicle.This system offers the following benefits:
- Compatibility with vehicles equipped with OBD systems
- Optimisation of fuel consumption
- Reduction in exhaust pollution substances
- Optimisation of vehicle driving conditions
- Installation simplicity
- Auto-calibration with vehicle in neutral
- Auto-diagnosis
- Pre-arrangement for self-adaptation
LPG SEQUENTIAL REGULATOR
The LPG regulator-vaporizer is the single-stage type with
diaphragm and is compensated by the vacuum of the suction
manifold. It is designed to ensure a higher output pressure
than the pressure inside the suction pipes of the engine.
The engine coolant flows inside the regulator-vaporizer
so that the LPG is completely vaporized. A solenoid valve
complete with filter is fitted on the inlet of the regulator.
A temperature sensor and a safety valve are fitted on the
regulator casing.
SEQUENTIAL ECU
The SEQUENTIAL ecu is connected in parallel to the original
petrol cpu. The petrol injection timing and engine rpm signals
are processed by the sequential ecu and transformed into
electric signals to command the injectors on the rails,
thus optimising the driving conditions and fuel consumption
levels of the vehicle. Once the vehicle has been converted,
the installer simply connects a PC and executes the initial
set-up of the basic parameters. If the dedicated map for
the vehicle being converted is not available in the “data
base”, the installer can still create the map for
that vehicle simply by entering the parameters relative
to the engine specifications. The ecu also offers other
functions, such as: - It is pre-arranged for most level
sensors sold in Italy and abroad. - It is pre-arranged to
read all types of lambda probes. - It is pre-arranged to
switch the system back to petrol automatically if there
should be any anomalies in the system or if the gas runs
out (the switch starts to buzz).- It is pre-arranged to
analyse the anomalies recorded and to diagnose the ecu itself.
-It records the time the vehicle runs on gas and records
any possible anomalies encountered (these are reset when
the vehicle is serviced).
RAIL OF INJECTORS
The rail sequentially dispenses the gas to each cylinder.
This function is performed by separate and absolutely independent
injectors, which receive the electric signal from the ecu.
This signal enables the system to calibrate the amount of
gas that is injected in just the cylinder in the suction
phase and it also controls the cut-off function.
SWITCH UNIT
This very small electronic module is installed inside the
vehicle compartment in a handy position for the driver.
Thanks to its very small size it can be fitted in the place
of an empty switch on the dashboard or a hole can be punched
for it on the dashboard using a hot punch. The switch unit
has the following functions: - It acts as a 2-position gas/petrol
selector switch and indicates the fuel in use by means of
two LED’s: A yellow one is lit when running on gas
and a red one is lit when running on petrol. - It displays
the amount of gas in the tank/cylinder by means of five
LED’s: four green ones (1/4; 1/2; 3/4 and 4/4) and
a red one for reserve. - It informs the driver on any anomalies
encountered in the Etagas system by means of the red petrol
LED that starts to flash.
Download PDF Brochure: Tartarini
Sequential Injection (843KB)
This file requires Adobe Reader to view
TARTARINI ETAGAS Injection System
The Etagas system is an electronically controlled gas fuelling
system that can be installed on all injection vehicles equipped
with closed-loop type control system. Compared to the “conventional”
LPG systems, the gas is injected very near the in-take valves
and therefore there is no longer any risk of backfiring.
The gas sent from the cylinder flows through the regulator-vaporizer
and supplies the distributor that establishes its flow rate
towards the injectors fitted near the petrol electro-injectors.
The processor of the Etagas system processes the following
signals to control the fuel setting correctly.
Download PDF Brochure: Tartarini
ETAGAS Injection (951KB)
This file requires Adobe Reader to view
TARTARINI TECH 97/99 System
Tartarini also produce conversion kits for conventional
engines. The Tech 97/99 is a basic single point system with
lambda control of LPG, delivery via a stepper motor, good
component build and general reliability. Reliable AEB electronics
control these systems. Uses a gas mixer to introduce LPG
to the intake upstream of the throttle. Considered suitable
for vehicles between 3 and 5 years old. On certain vehicles,
dependant on inlet manifold design, the system can suffer
with induction backfires, and as such is best not fitted
to vehicles with plastic inlet manifolds.
Visit the Tartarini
Auto website
To find out which LPG system is recommended for your vehicle,
please speak to John at Central Garage.
TEL: 01302 722282
Email: info@centralgaragecarcroft.co.uk
