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Landi LIS, Installation And Adjustment Manual

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Installation and adjustament manual

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INDEX

1. DESCRIPTION .................................................................................................................. PAG.4

1.1

Operational principles ............................................................................................... pag.4

1.2

Programming the ECU .............................................................................................. pag.4

2. INPUT SIGNAL ................................................................................................................. PAG.5

2.1

MAP (Manifold Absolute Pressure) .......................................................................... pag.5

2.2

Engine RPM .............................................................................................................. pag.5

2.3

TPS (Throttle Position Sensor) .................................................................................. pag.5

2.4

Lambda sensor (Oxygen Sensor) ............................................................................... pag.5

2.5

Regulator-vaporizer temperature ............................................................................... pag.5

3. COMPONENTS ................................................................................................................. PAG.5

3.1

Regulator-vaporizer ................................................................................................... pag.6

3.2

Proportioner ............................................................................................................... pag.6

3.3

Distributor .................................................................................................................. pag.7

3.4

Injector ....................................................................................................................... pag.7

3.5

Electronic Control Unit (ECU) .................................................................................. pag.7

3.6

Wiring ........................................................................................................................ pag.8

3.7

Switch ........................................................................................................................ pag.8

3.7.1 Switch with fuel level indicators specifications ........................................................ pag.8

3.7.2 Emergency alternative fuel start-up by using the switch/fuel level indicator ........... pag.9

3.8

The LIS kit content .................................................................................................... pag.9

4. INSTALLATION ............................................................................................................. PAG.10

4.1

Required equipment ................................................................................................. pag.10

4.2

Assorted shop materials ........................................................................................... pag.10

4.3

Before starting the conversion ................................................................................. pag.10

4.4

LIS components installation .................................................................................... pag.10

4.4.1 Regulator-vaporizer ................................................................................................. pag.10

4.4.2 Proportioner ............................................................................................................. pag.11

4.4.3 Distributor ................................................................................................................ pag.11

4.4.4 Injectors ................................................................................................................... pag.11

4.4.5 Gaseous LPG connection hoses and MAP connection ............................................ pag.12

4.4.6 Installation of the LIS ECU ..................................................................................... pag.13

4.4.7 Installation of the switch ......................................................................................... pag.13

4.4.8 Installation of injector’s simulator ........................................................................... pag.13

4.4.9 Electrical connections .............................................................................................. pag.13

4.4.10 Installation of LPG tank and tubing for liquid LPG ................................................ pag.14

5. PROGRAMMING OF THE ELECTRONIC CONTROL UNIT (ECU) ......................... PAG.15

5.1

To begin ................................................................................................................... pag.15

5.2

Select language ........................................................................................................ pag.15

Summary of Contents for LIS

Page 1: ...NSTALLATION AND ADJUSTMENT MANUAL LANDI S r l Via Regina Elena 17 42100 Reggio Emilia ITALY Tel 39 0522 514461 Fax 39 0522 514469 E mail info landi gas it Web Site http www landi gas it Injection System ...

Page 2: ... Emergency alternative fuel start up by using the switch fuel level indicator pag 9 3 8 The LIS kit content pag 9 4 INSTALLATION PAG 10 4 1 Required equipment pag 10 4 2 Assorted shop materials pag 10 4 3 Before starting the conversion pag 10 4 4 LIS components installation pag 10 4 4 1 Regulator vaporizer pag 10 4 4 2 Proportioner pag 11 4 4 3 Distributor pag 11 4 4 4 Injectors pag 11 4 4 5 Gaseo...

Page 3: ... 7 5 Cut off pag 21 5 8 Vehicle files archive pag 22 5 9 File consulting pag 22 5 9 1 Archive update pag 22 5 10 Customer archives pag 23 5 11 Consulting the archive pag 23 5 11 1 Customer search pag 24 5 11 2 Modifications and deletion of customer files pag 24 5 12 Program termination pag 24 6 LPG OPERATION PARAMETER VERIFICATION PAG 25 7 EMISSION MESAUREMENT PAG 26 7 1 Idle emission pag 26 7 2 F...

Page 4: ...ns results The microprocessor modulates the amount of gas in function of driving conditions so that performance and emissions are constant even in different environmental conditions and with fuel composition changes Fig 1 The microprocessor takes into account the engine s deterioration and automatically corrects the fuel s reference parameters The fuel management is further refined by other functi...

Page 5: ...mand During the deceleration phases the ECU operates the cut off electrovalve in order to reduce the amount of fuel delivered to the engine this way optimizing emissions and engine braking effect 2 4 Lambda sensor Oxygen Sensor The Lambda signal informs the ECU on engine combustion To achieve the correct air fuel ratio it is necessary that the air volume taken in by the engine corresponds to the t...

Page 6: ...ng deceleration The diagnostic plug to read the system s working pressure is present on the cut off valve Legenda A Fuel inlet B Fuel outlet C Solenoid valve D Cut off electrovalve E Idle low power step motor F Medium high power step motor G Diagnostic plug to read the system s working Fig 3 1 F Water outlet G Water inlet H Temperature sensor I Safety valve L Second stage pressure setting screw M ...

Page 7: ...nal integral correction in function of the Lambda sensor signal and further fine tuned in function of the TPS signal for acceleration and cut off conditions Fig 3 3 Fig 3 4 The MAP sensor is an integral part of the LIS as is the temperature sensor on the regulator vaporizer The signal of the temperature sensor is utilized to establish the petrol gas automatic change over after the engine start up ...

Page 8: ...sensor emulation Gris 33 Oxigen sensor Purple 34 Alternative fuel level sensor White 35 Power supply sensor Green 36 N C N C 37 N C N C 38 TPS Yellow Blue 39 TPS 2 Blue Black 40 Switch Brown 41 Switch shunter Blue 42 DC Switch supply Red 43 Switch Ground Black 44 Step motor signal White 45 Step motor signal Orange 46 Step motor signal Light blue 47 Step motor signal Purple 48 N C N C 49 N C N C 50...

Page 9: ...adily on Crank the engine without bringing the key back to off position before starting this achieves direct gas start up 3 8 The LIS kit content Description Quantity Electronic Control Unit 1 pcs Switch with level Indicator 1 pcs Distributor DI01 4 for 4 cylinders engine 1 pcs Proportioner 1 pcs LIS01 LPG regulator vaporizer electrovalve 1 pcs Water hose 15x23 1 5 m Low pressure gas hose 10x18 1 ...

Page 10: ...procedure and when necessary replace deficient components with particular emphasis on the Lambda sensor 4 4 LIS components installation 4 4 1 Regulator vaporizer The regulator can be installed by observing the following procedure Install the regulator in the engine compartment in the position indicated in the relevant vehicle file Mount the unit directly or indirectly onto the vehicle s body or on...

Page 11: ...lected seal the unused inlet with the plug provided as indicated in the vehicle file A 120 degree A fitting Fig 4 3 is supplied with the kit This fitting can be installed either in the fuel inlet of the distributor or in the fuel outlet of the proportioner to facilitate the connection in special circumstances Information on the circumstances for the use of this fitting is indicated in the vehicle ...

Page 12: ...ng punch the exact locations where the holes for the injector jets will be created 4 Apply grease on the drill bit in order to prevent the spreading of shavings then drill by using a 7 mm bit if the intake manifold is made of aluminum alloy Use a 6 75 mm drill bit if the intake manifold is made of plastic During drilling it is important that the drill bit is maintained perpendicular to the surface...

Page 13: ...ion is protected from accidental tearing during engine service Solder each connection and seal it with heat shrink tubing To find the 12V power source for the LIS see the wiring diagram of the vehicle file Connect the ground wires to a reliable ground In the proportioner unit the idle low power stepper motor is marked in red make sure that only the harness connector marked in the same way is conne...

Page 14: ...n sensor M Ignition coil N Battery O Regulator vaporizer P Electrovalve Q Fuel level sensor R Temperature sensor 4 4 10 Installation of LPG tank and tubing for liquid LPG The installation of these components is not different from the installation of a conventional aspirated system using the Venturi mixer 4 4 10 1 LPG tank General information The installation of the LPG tank must comply with the fo...

Page 15: ...the mapping file for the vehicle to be converted must be in the archive To update the archive follow the procedure described in 6 9 1 5 Programming of the electronic control unit ECU The LIS computer software program enables Landi installers to interact with the LIS injection system Normaly it is possible to program the ECUs with vehicle files from the archive to maintain a customer archive and to...

Page 16: ...y pressing ALT C 2 Select the Serial Port command with the mouse or by pressing ALT P A submenu appears where it is possible to select COM1 or COM2 The default selection is COM1 since this is the one available on all laptops which are provided with just one serial port in the first place If the use of the second serial port is desired option COM2 must be chosen To choose the internet connection pr...

Page 17: ...ay and Verifications F1 Operational Diagnosis F2 Parameter Modification F3 Main Menu ESC All the operations of this menu are possible only if the ECU is CONNECTED and powered up If the user has performed the LIS installation the ECU is ready Otherwise it is necessary to choose the command CONNECT in the ECU menu of the main screen display before entering this page Fig 5 4 2 To consult the general ...

Page 18: ...ons are displayed the buttons allow the activation or deactivation of as many TESTS 1 Idle Stepper Motor Sequence The idle low power stepper motor performs an open closed sequence 2 Power Stepper Motor Sequence The medium high power stepper motor performs an open closed sequence 3 Fuel Indicator Sequence The switch fuel level indicator performs a sequence during which all the LEDs are lit thus ver...

Page 19: ...either enabled or disabled by the operator Conversely the active enabling boxes allow activation or deactivation Fig 5 7 Fig 5 8 of the pertinent check up simply by clicking on the box Each check up corresponds to a certain strategy that the ECU performs when the malfunction occurs The strategy cannot be modified but it can be viewed in the EFFECT column The possible effects are No Effect when the...

Page 20: ... 3 Constructed Wave sends to the OEM computer a simulation constructed with the following parameters Frequency number of waves sent to the OEM compu ter after simulating disconnection of the lambda sensor High Simulation Duration time during which the signal simulates rich mixture Low Simulation Duration time during which the signal simulates lean mixture O2 disconnected Duration time elapsed betw...

Page 21: ...show by how much the carburetion must be further corrected in the event that the corrections performed by the automatic Adaptive Learn are not sufficient To this end it is possible to enter the value of the AVERAGE DRIFT cells in the cell CORRECTIVE STEPS PERFORMED INSTALLER line in the appropriate RPM range Example If a condition similar to the one in Fig 5 10 occurs the AVERAGE DRIFT 1 value of ...

Page 22: ...keep the archive updated For further information on how to update the archive see section 5 9 1 To see the GENERAL INSTRUCTIONS press the button GENERAL INSTRUCTIONS or ALT G The specific instructions for the vehicle model available only after the selection of the specific vehicle from the archive are displayed with the key VEHICLE SPECIFIC INSTRUCTIONS ALT V For further details about the INSTRUCT...

Page 23: ...Installation Date Regulator Vaporizer Serial Number must be entered Vehicle s Plate Number Each time an LIS installation is performed the program adds a new file to the archive This is the only way to add files to the customer archive The data of the Customer Archive can only be entered by the operator The data concerning the Vehicle Data except vehicle plate number and regulator vaporizer serial ...

Page 24: ...have to be entered in the valid format To confirm the changes click on the CONFIRM MODIFICATIONS button If a customer file has been changed by mistake it is possible to cancel the changes and return to the pre existing data by clicking on the CANCEL MODIFICATION button This operation cancels all the changes on the current file Notice that if these two buttons are enabled it means that changes have...

Page 25: ...r as in Fig 6 3 Fig 6 1 With the engine running and idling the following data must be read in the MONITOR ECU to know that a correct installation and carburetion has been performed Sensor status Lambda 0 1 0V variable read out MAP the displayed value must be slightly greater than the median mark Regulator Temperature greater than 25 C Pressur 0 95 0 98 If the pressure is on Low or High turn pressu...

Page 26: ... negative value of 5 for rich Lambda sensor signal a maximum positive value of 5 for lean Lambda sensor signal Fig 8 1 Insert this value in cell E see Fig 8 1 FUEL ENRICHMENT STRATEGY Click on the MODIFY button Turn the ignition key off then on 8 3 Correct idle with non optimized integrator values 8 3 1 Integrator 1 out of the 10 10 range From the menu MONITOR ECU go back to ECU MANAGEMENT Press F...

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