lr_omegas_gpl_5_6_8_cil_gb.pdf

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Nuovo-6.P65
COMPONENTS AND
INSTALLATION HANDBOOK
LPG
5-6-8CYLINDERS
COMPONENTS AND
INSTALLATION HANDBOOK
LPG
5-6-8CYLINDERS
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Table of Contents
CHAPTER 1
SYSTEM DESCRIPTION
1.1
Principle of operation
5
CHAPTER 2
SIGNALS PROCESSED
2.1
INPUT signals
7
2.1.1
Petrol injection signals
7
2.1.2
RPM (Engine Revolution) signal
7
2.1.3
MAP pressure signal (if present)
7
2.1.4
Engine coolant temperature signal (optional)
7
2.1.5
Gas temperature signal
7
2.1.6
Gas pressure signal
7
2.1.7
Gas level sensor
7
2.2
OUTPUT signals
8
2.2.1
Gas injection signals
8
2.2.2
Driving the gas solenoid valves
8
2.2.3
Petrol/gas swicht/Indicator
8
2.2.4
PC diagnostics
8
CHAPTER 3
COMPONENTS
3.1
IG1 PRV vaporizer/pressure regulator
11
3.2
Water temperature sensor (optional)
12
3.3
Filter FL-ONE
13
3.4
Injector rail
14
3.5
Nozzle – manifold
16
3.5.1
Standard nozzle
16
3.5.2
Optional nozzle
16
3.6
LANDIRENZO OMEGAS control unit
17
3.7
Petrol/gas swicht
19
3.8
Wiring harness
20
3.8.1
Injection system
20
3.8.2
Injector cutter
22
2
LANDI RENZO S.p.A.
Componets and installation handbook
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CHAPTER 4
INSTALLATION
4.1
Equipment/tools required
23
4.2
Assorted workshop materials
23
4.3
Before starting the installation
23
4.4
Assembling components
24
4.4.1
Notes relating to all components involved
in handling gas
24
4.4.2
Closing and opening the CLIC-R clamps
on the gas tubes
24
4.4.3
Vaporizer/pressure regulator
25
4.5
Filter unit
26
4.6
Injector rail
27
4.7
Nozzles
28
4.8
Connection tubes
29
4.8.1
Engine system
29
4.9
ECU
32
4.10
Petrol/gas swicht
32
4.11
Electrical connections
33
4.11.1
System for aspirated engine with IG1 regulator
33
4.11.2
System for aspirated engine with two IG1 regulators 34
CHAPTER 5
REMINDER
5.1
Installation
36
5.2
Engine idling
37
5.3
Acceleration slightly from idle
38
5.4
Acceleration flat out from idle
38
5.5
Petrol-gas changeover
39
5.6
Returning to idle
40
5.7
Full open throttle engine operation
41
5.8
Flat out at medium-high regimes
42
5.9
High torque low RPM operation
42
Componets and installation handbook
LANDI RENZO S.p.A.
3
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5.10
Miscellaneous
43
5.11
LR OMEGAS program error codes
44
CHAPTER 6
GLOSSARY
Do not under any circumstances tamper with the original Landi Renzo components, especially with
the engine running or with the control panel inserted.
Washing the engine with water jet and installation in unsuitable parts of the engine compartment
may lead to water penetration into the components (control unit, reduction unit, injectors, etc.)
leading to damage.
LANDI RENZO S.p.A declines any responsibility for damage or injury to persons or objects
caused by tampering with components by unauthorised personnel.
4
LANDI RENZO S.p.A.
Componets and installation handbook
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CHAPTER 1
SYSTEM DESCRIPTION
1.1
PRINCIPLE OF OPERATION
The LANDIRENZO OMEGAS phased sequential system is part of the latest
generation of petrol to gas phase LPG conversion systems on the market. The
principle with which the gas ECU determines the injection times actuated on the
gas injectors is based on the acquisition, during the gas operation of the petrol
injection times on emulation impedances internal to the gas ECU itself. This
means that the control of the motor is left to the petrol control unit while the gas
control unit is given the task of converting the data generated by the former for the
petrol injectors, into suitable data for the gas injectors.
To put it in simple terms, one could say that the gas control unit converts a certain
quantity of energy that should have been released from petrol into a corresponding
quantity of energy that will be really released by the gas.
The result is that the system is as uninvasive as possible compared with the
original petrol system and is able to integrate effectively with the latter’s main
(controlling fuel ratio, cut off, EGR, purge canister, cut off for over-revving, etc.)
and secondary (air-conditioner clutch control, power steering overpressure,
electrical loads, etc.) functions.
The conversion of petrol injection times in gas injection times is carried out on the
basis of a series of parameters, in addition to the petrol injection times acquired
by the gas ECU:
- gas pressure in the rail
- gas temperature
- engine water temperature
- engine revolutions
- battery voltage.
In particular, aiming at maintaining perfect coherence with the petrol system, the
gas ECU actuates the injection of the gas on the same cylinder on which the
petrol injection time was acquired.
Start-up normally occurs with petrol and, in emergency conditions, there is an
option for starting with gas by means of a Petrol/gas swicht. Having started the
engine, if the Petrol/gas swicht is in the gas position, the gas ECU (Electronic
Control Unit) checks for the conditions that must be verified for switching.
The liquid gas, which is stored in the tank at a pressure that depends on its
composition and the ambient temperature, is atomized in the reducer and
adjusted to an output pressure that is 1 bar higher than the pressure in the suction
manifolds.
From the moment at which the following conditions are reached:
minimum RPM threshold, minimum engine coolant temperature and acceleration
or deceleration, the solenoid valves open and after 1 second the system switches
to gas.
At this point, the petrol injectors are deactivated and the gas ECU starts to drive
the gas injectors.
The gas ECU reads each individual petrol injection time and translates it into a
gas injection time to drive the relative injector set in correspondence to the same
cylinder.
Componets and installation handbook
LANDI RENZO S.p.A.
5
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