KME NEVO User manual

ver. 1.3.2 04-12-2019
USER MANUAL
OPERATION AND THE USE OF A CAR WITH
Diego G3 / NEVO / NEVO-SKY
SEQUENTIAL GAS INJECTION SYSTEM

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
Table of contents
1. STARTING THE ENGINE.................................................................................................................... 2
2. CONTROL PANEL.............................................................................................................................. 3
2.1 Indication of the current level of gas fuel in the tank (A) ....................................................... 4
2.2 Light sensor (NEVO and NEVO-SKY only) ................................................................................ 4
2.3 Gas system signaling................................................................................................................ 4
2.3.1 Errors flashing codes (NEVO and NEVO-SKY only) .......................................................... 5
2.3.2 Acoustic signalization ...................................................................................................... 6
2.4 Additional control panel messages in NEVO and NEVO-SKY system ...................................... 6
2.5 Emergency start on gas ........................................................................................................... 7
2.6 Automatic gas level indicator calibration (NEVO and NEVO-SKY only, for NEVO available
from 4.0D version)............................................................................................................................... 8
1. STARTING THE ENGINE
Vehicle equipped with Diego G3 / NEVO system normally starts on gasoline. Switching
to gas fuel supply occurs automatically after obtaining the relevant parameters, selected
during the calibration of the system, such as:
•coolant / reducer temperature,
•the delay time of switching petrol → gas,
•engine speed (RPM) for switching.

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
A- LED indicator of actual gas level in the tank
B- switch for fuel type selection
C- status LEDs (working state indication)
(blue or red LED - configurable into software)
D- light sensor
A- RGB LED indicator of actual gas level in the tank
((configurable into software)
B- switch for fuel type selection
C- status LEDs (working state indication)
(configurable into software)
D- light sensor
E - backlight LED (configurable into software)
A- LED indicator of actual gas level in the tank
B- switch for fuel type selection
C- status LEDs (working state indication)
(configurable into software)
D- light sensor
A- LED indicator of actual gas level in the tank
B- switch for fuel type selection
C- status LEDs (working state indication)
(blue or red LED - configurable into software)
2. CONTROL PANEL
Driver uses controls panels to communicate with gas ECU.
Fig. 2.1 Diego G3 control panel.
Fig. 2.2 DG4 control panel
Rys. 2.4 DG7 RGB control panel
Rys. 2.3 DG5 control panel

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
Panel implements following tasks:
1. Fuel type selection –pressing button (B) causes the transition from one fuel to another
(petrol - gas - petrol)
2. Working state indication (C).
Work on petrol –gas system is completely shut down, the panel is completely blank -
no lights are flashing. The backlight diode for the DG7 panel may be on.
Work on petrol with the function of waiting for a switch to gas –flashing fuel level and
level LED's. The system is waiting for parameters to switch. If the reducer temperature is
lower than required for switching, it will be signaled by the fuel level LED's.
Work on gas –permanently illuminated status LED (selectable during the calibration of
the system).
Work on gasoline with the auto-return –if conditions occur during gas operation that
cause switching to petrol, the panel will start blinking with the status LED and the status
level LEDs. WARNING! The auto-return signaling function can be disabled in the
configuration program.
2.1 Indication of the current level of gas fuel in the tank (A)
Number of illuminated LEDs of gas level display indicates the degree of filling the gas
tank:
Diego G3
NEVO DG4
NEVO DG5 / DG7
4 green LEDs
3 green LEDs
5 LEDs
Full tank
3 green LEDs
2 green LEDs
4 LEDs
4/5 of tank capacity
2 green LEDs
1 green LEDs
3 LEDs
3/5 of tank capacity
1 green LED
Flashing red LED
(or 1 green + 1 red)
2 LEDs
2/5 of tank capacity
1 red LED
1 red LED
1 LED
1/5 of tank capacity
2.2 Light sensor (NEVO and NEVO-SKY only)
Depending on the ambient light controller automatically adjusts the brightness of the
panel (configurable option in the program).
2.3 Gas system signaling
Sequential gas injection system Diego G3 / NEVO / NEVO-SKY has the function of self-
control, allowing to detect malfunctions of the gas installation. All errors are stored in the

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KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
ECU, and most of them are indicated on the control panel. Errors are indicated by alternate
flashing of the red and blue LEDs with an acoustic signal. In NEVO system errors are
additionally indicated by flashing the gas level LEDs (only when this option is activated). The
most common cause of the error signal is no gas in the tank. Deleting this alarm requires
pressing the fuel type selection button or it will be muted automatically after a few seconds.
2.3.1 Errors flashing codes (NEVO and NEVO-SKY only)
NEVO error codes list (code, description, flashing code):
Control panel type
NEVO DG4
NEVO DG5 / DG7
Code
Description
Red Green Green Green
Diode 1
Diode 2
Diode 3 Diode 4 Diode 5
E001-
E008
Petrol injector no signal cyl 1..8.
E009-
E016
Gas injector malfunction cyl 1..8.
E017
Reducer temperature sensor short.
E018
Reducer temperature sensor open.
E019
Gas temperature sensor short.
E020
Gas temperature sensor open.
E021
Gas valves –circle short.
E022
Gas valves - circle open.
E023
Empty gas tank (low gas pressure).
E024
Inefficient reducer heating circle (Reducer too cold
<15°C).
E025
Petrol injectors merged (lack of information about
mixture).
E026
Gas injectors merged (lack of possibility of gas
mixture correction).

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
2.3.2 Acoustic signalization
In addition to the light signals which are displayed on the control panel, the gas system
also indicates individual events using acoustic signals:
a) Each fuel type change button press is indicated by an sound signal.
b) If you run out of gas in the tank or the gas pressure in the gas injectors drops system
will automatic return from the gas supply to petrol and the driver will hear a beep -
turned off by pressing the button on the panel once (system remains in standby
mode - alternately flashing two LEDs - blue and red). In that state, after refueling the
car on gas station system automatically switches to gas supply. Another push of the
button on the panel will switch from gas supply to gasoline permanently –in this
state each engine start generates three beeps to remind that the system remained in
operation on gasoline (it is possible to disable this feature using the software for gas
ECU) and the system will not switch to gas.
c) Gas ECU may also indicate the fact that the car has reached the distance from the last
inspection (configurable from the program) and another visit in the workshop is
required. This information is generated immediately after switching system to the
gas (once for each engine start) in the form of the 10 short sounds at intervals of 0.5
seconds.
NOTE! It is possible that the workshop blocks gas operation after the distance has
been signaled. In order to restart the gas system, a visit to the workshop is necessary.
To make sure the operation block is active, ask the workshop where the gas
installation was installed.
NOTE! The beeps can be turned off in the configuration program. If in doubt, ask the
workshop where the gas installation was installed.
2.4 Additional control panel messages in NEVO and NEVO-SKY system
In a state of waiting for switching parameters, system may inform on level indicating
LEDs about time left to gas switching. Sequentially illuminate LEDs indicate the status of
warm up the engine (the regulator). All level LEDs pulsing mean that the car reached the
switching temperature.

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
2.5 Emergency start on gas
In case of petrol fuel system failure installed Diego G3 / NEVO / NEVO-SKY system
allows you to start the engine directly on the gas. In order to start the engine on emergency
mode you should:
1. Turn the ignition on.
2. Switch system to petrol (panel is completely blank –no diodes light on).
3. Turn the ignition off.
4. Turn the ignition on (the engine cannot work).
5. Press and hold button on the Control panel for about 10 seconds until you hear a
long beep (status LED lights constant light –at this moment the system goes into
operation on gas and the gas ECU open the valves).
6. Release the button on Control panel and immediately start the engine (without
reversing the ignition key in the ignition off position.)
7. WARNING! Too long holding button on the panel will start the automatic gas level
indicator calibration procedure (only NEVO). It is possible to exit from this mode by
pressing the button again (the LED on the panel will go off and the system goes on
petrol).
After emergency start (directly on the gas) before you start driving, wait for the
temperature of the engine to raise to about 50 C to ensure sufficient heating of the
reducer. Otherwise, the reducer may freeze, which may damage the gas system components
and even the engine.
NOTE! The reducer/environment temperature must be greater than 0 C, otherwise due to
safety reasons it is impossible to start the vehicle on gas fuel. Therefore, this feature should
be used only in exceptional circumstances!
Frequent use of this mode more than 50 times will block the possibility of an emergency
engine start directly on the gas fuel. It will also determine the need the workshop in order to
unlock the ECU function.
NOTE! Emergency start on gas may be disabled when 12V “after the ignition” signal
disappears during the procedure.
NOTE! During emergency starting on the gas cannot operate some functions of the
controller (e.g. switching mechanisms).
NOTE! Function is not supported for NEVO-SKY DIRECT.

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ver. 1.3.2 04-12-2019
KME Sp. z o.o.●ul. Św. Teresy od Dzieciątka Jezus 103A●91-222 Łódź●Office: Aleksandra 24/26 93-418 Łódź ●
tel [phone] ●fax [phone] ●www.kme.eu ●NIP: 732-199-00-33 ●REGON: 473207460 ●
Nr KRS: 0000181402
2.6 Automatic gas level indicator calibration (NEVO and NEVO-SKY only,
for NEVO available from 4.0D version)
This process allows you to automatically configure the full range of gas level indication
on the panel driver. Prior to calibration, it is necessary to select the right type of gas level
sensor.
Automatic calibration should be performed during the refueling of empty gas tank. The
whole procedure is as follows:
1. Turn the ignition on (gas tank should be empty).
2. Switch system to petrol (panel is completely blank).
3. Turn the ignition off.
4. Turn the ignition on (the engine cannot work).
5. Press the button on the control panel, and hold for about 15 sec. (available to NEVO
4.0G version) or 20 sec. (newer versions). After about 10 seconds the gas ECU open
the valves and indicates working on gas (you can hear longer beep from drivers
panel).
6. After about 5 sec. (to NEVO 4.0G) or 10 sec. (newer versions) after the gas valve
opening (the button is still pressed) panel will indicate the calibration mode of the
gas level indicator –gas level LEDs flash alternately.
or
7. Wait about 5 seconds to write down stable minimum level of gas.
8. Turn the ignition off.
9. Fuel the gas tank.
10. Turn the ignition on.
11. Wait until the panel stops indicating the calibration mode.
12. Calibration finished.
WARNING! It is possible to exit from the automatic calibration gas level indicator by pushing
the button again (the LED on the panel will go off and the system goes on petrol).
WARNING! If panel indicates wrong fuel level after calibration it could mean that it was
made improperly –repeat the process before next refueling.