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Sequent PLUG & DRIVE LPG and CNG

Sequent Plug & DriveB R C G A S E Q U I P M E N T

Sequent Plug & Drive is the new system for LPG/CNG conversion developped by BRC.

Designed on the basis of the previous Sequent systems but characterised by a totally new approach of gas flow management. Main innovation is in the software for engine management. Thanks to its new algorithms, it allows an optimised feeding of gas fuel, in a simply and intuitive way. Some of more advanced functions have been integrated and others have been added in order to simplify the calibration procedure.

SEQUENT PLUG & DRIVE LPG KITB R C G A S E Q U I P M E N T

Into the kit LPG Solenoid valve ET98 Genius MB/Max reducer (water temperature sensor 2 poles) Fuel Rail with BRC injectors and PTS sensor (brown connector) MAP Sensor with integrated connector (grey) ECU

Harness Change-over switch one-touch with buzzer Gas filter FJ1 HE

Out of the kit Harness for petrol injector cutting (dx, sx, etc.) High pressure pipe (copper or flexible at choice)

LPG SYSTEMB R C G A S E Q U I P M E N T

SEQUENT PLUG & DRIVE CNG KITB R C G A S E Q U I P M E N T

Into the kit VM A3/E solenoid valve Zenith reducer (water temperature sensor 2 poles) Fuel Rail with BRC injectors and PTS sensor (black connector) MAP Sensor with integrated connector (grey) ECU Harness Change-over switch one-touch with buzzer

Out of the kit Harness for petrol injector cutting (dx, sx, etc.) High pressure pipe (copper or flexible at choice) Filling nozzle

CNG SYSTEMB R C G A S E Q U I P M E N T

HARNESSB R C G A S E Q U I P M E N T

HARNESSB R C G A S E Q U I P M E N T

To connect Power Ignition on

Optional Connection to OBD plug depending on type of connectionConnectionType PIN

6-7-8-9CAN BUS 6 - 14

1-2-3K LINE 7

Lambda oxygen sensor IN

In case of need Lambda oxygen sensor OUT External timing advancer (for CNG) RPM signal

NEW GAS ECUB R C G A S E Q U I P M E N T

HARDWARE INNOVATION Communication with new change-over switch and PC on same K line Communication with petrol OBD on K line or dedicated CAN Output for timing advancer external unit (for CNG)

SOFTWARE INNOVATION Totally revised Injection Control Self-mapping Leaning in Open Loop Tip-in / Tip-out and Setup already activated New functions thanks to communication to OBD.

WHATS NEW: what you can seeB R C G A S E Q U I P M E N T

WHATS NEW: what you CANT seeB R C G A S E Q U I P M E N T

Improvement in Fuel Control management Improvement in RPM reading from petrol injectors Ton: consequently, RPM signal is no more necessary A new grafic for the interface sw has been created with same lay-out with all other Sequent systems

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BASIC CONCEPTS Sequent PLUG & DRIVE system

INSTALLATION AND CALIBRATION PROCEDURE FOR SEQUENT PLUG & DRIVEB R C G A S E Q U I P M E N T

INSTALLATION SEQUENT PLUG & DRIVE DRIVEABILITY : REFINE TIP-IN, TIP-OUT, RETURN TO IDLE

IS VEHICLE OK?

YES

SELF MAPPING

NO

DRIVEABILITY: O.L. STRATEGY CHECK THE MAP AND VEHICLE PERFORMANCE

IS VEHICLE OK?(TIP-IN, TIP-OUT, RETURN TO IDLE)

NO

CHECK MECHANICAL INSTALLATION

NO

IS VEHICLE OK?(OPEN LOOP condition)

YES

YES

DELIVER THE CAR TO CUSTOMER

Injection: CalculationB R C G A S E Q U I P M E N T

+12 V

Petrol INJECTOR

GAS EQUIPMENT CARACTERISATIONBRC injectors characteristics P1+12 V

T gas

Gas INJECTOR+12 V

Step1Orange Violet TonP

Step2

Step3

TonP reading PETROL flow calculationPetrol flow

GAS flow calculationGas flow

Ton G calculation

TonG

Petrol ECU

GAS ECUMAP

SELF-MAPPING PROCEDURE SEQUENT PLUG & DRIVEB R C G A S E Q U I P M E N T

START PROCEDURESELECT TYPE EQUIPMENT (Step 1)SETUP EQUIPMENT AND TYPE OF INJECTORS (Step 2) SAVE FILE .FPD (Step 3) SELF-MAPPING (Step 4) SAVE FILE .FPD (Step 5)

END OF PROCEDURE

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SELF-MAPPING

SELF-MAPPINGB R C G A S E Q U I P M E N T

Start procedure

Idle in petrol

whats 1st Correction

3 accelerations

Sequential Change-over Automatic from Petrol to Gas: 1st Correction Gas Map

Gas Map?

1st Correction Gas MapB R C G A S E Q U I P M E N T

Gas Injector switched

Gas map error

1 STEP 2 STEP 3 STEP 4 STEP

SELF-MAPPINGB R C G A S E Q U I P M E N T

Start procedure

End procedure

Idle in petrol

OKCHECK DATA GAS MAP

3 Correction Gas Map

3 accelerations

KO

Sequential Change-over Automatic from Petrol to Gas: 1 Correction Gas Map

Switch to gas: 2 Correction Gas Map

Switch to Petrol

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MANUAL CHECKING GAS MAP

CLOSE LOOP = Map refinementB R C G A S E Q U I P M E N T

Correction at idle

Correction at medium and high power

OBD parameters bank 1

OBD parameters bank 2

CLOSED LOOP = Map refinementB R C G A S E Q U I P M E N T

Gear correction Correction at idle

Easy Refinement

OBD parameters bank 1

OBD parameters bank 2

CLOSED LOOP = Map refinementB R C G A S E Q U I P M E N T

CNG map parameter Ton at idle (in Gas operation)

Map refinement @ idleB R C G A S E Q U I P M E N T

Ride Easy RefinementB R C G A S E Q U I P M E N T

Easy Refinement: points on petrolB R C G A S E Q U I P M E N T

Easy Refinement: points on gasB R C G A S E Q U I P M E N T

Easy Refinement: gas map modificationB R C G A S E Q U I P M E N T

Easy Refinement: gas map modificationB R C G A S E Q U I P M E N T

Warning!B R C G A S E Q U I P M E N T

Important concepts Map Refinement Close Loop Idle control: taking into consideration MAP variation and checkingLambda sensor trend, check that, when switching from petrol to gas, TonP is still the same. When possible, connect EOBD tester to check selfadapting parameters Gear control: check the map with TonP more than that at idle. I.e. 9-10 ms If connection to EOBD plug is present, check the self-adapting parameters Ton Min Gas = value of TonP at idle during gas mode Map parameters: after map refinement, always check that numeric value of Q is negative (

QPOptimal (Rich) QG

o If the Real Petrol Flow required by petrol ECU is lower than the Optimal Limited one, Sequent P&D will not make any cutting and gas flow will be calculated on the Real Petrol Flow

QPStoich. + ENO.L.