Sequent Maestro – LPG
Sequent Maestro – LPG
New LPG and CNG conversion system for petrol direct injection vehicles
Sequent Maestro is the new system BRC developed for converting to gas the latest generation petrol direct injection engines. Suitable for a wide range of vehicles with engines of all powers and of the latest generation (DI & DI-MPI), it complies with the Euro 6D WLTP standard, Sequent Maestro offers a smoother, more powerful ride, lower emissions and greater savings.
Main components include the compact and full electronic eVP-500 LPG reducer, with smooth and excellent performances on both low and high powered engines, the innovative and advanced control and management unit AFC-3.0 DI, and the always reliable, accurate and high-performance BRC IN03 injectors. More made in Westport Fuel Systems components make the system complete, such as the BRC One-Touch changeover switch and the Type 94 gaseous phase filter. Some BRC applications use the traditional Genius MB reducer as an alternative to the eVP-500 one.
Genius MB reducer – LPG
• Diaphragm single-stage type building
• Adjusted pressure: 800, 1.200 or 1.500 mbar relative to the intake manifold pressure
• No bleeding operation needed
• Operating temperature: -40 °C ÷ 120 °C
• M12x1 Gas inlet
• 16 mm gas outlet
• 16 mm coolant connections
• Integrated coolant temperature sensor
• Weight 1.200 g
• Approval: R67-01
EVP-500 Reducer
• Single stage full electronic LPG pressure reducer
• 300-2500 kPa input pressure
• 0- 550 kPa adjustable output pressure (software limited between 50-380kPa)
• >100 kg/h Max Fuel flow rate (at 60⁰C ECT)
• 585 ±50 kPa pressure relieve valve (acc.to R67-01)
• Operating temperature: -40 °C ÷ 120 °C
• M12x1 Gas inlet
• 16 mm gas outlet
• 16 mm coolant connections
• Integrated coolant temperature sensor
• Software controlled MAP Reference
• Weight 800 g
• Dimensions ø 56 mm x 142 mm
ECU AFC-3.0 DI
• 3, 4 & 6 Cylinder
• Operating temperature: -40 °C ÷ 120 °C
• Housing: Plastic top with ventilation plug – Aluminium bottom with cooling fins covers – IP69K
• Operating voltage 7,5V to 15V, reverse voltage and ISO pulse protected (limp home 5V)
• 3 Connectors – Molex
• Inputs: Analog sensors – Digital OEM sensors – Digital inputs
• Petrol injectors: DI and MPI from 3 to 6 cylinders
• MPI petrol injector types – Internal Emulation
• DI petrol injector – Integrated Variable GDI Emulation
• Current consumption: Standby current 27 mA @ 12V – sleep current < 0,50 mA @ 12V
• Communication Interfaces: 3x CAN, 1x LIN-bus
• Dimensions box 208 x 180 x 44 mm
• Weight 1.200 g
• Approval: R67, R110, R10
Gaseous phase filter – LPG
• IN and OUT gas fitting ø 12,5 mm
• Cartridge material glass fiber
• Working Pressure 0 ÷ 4,5 bar
• Operating temperature: -40 °C ÷ 120 °C
• Approval: R67-01 and R110
BRC IN03 MY09 electroinjector LPG/CNG
• Floating shutter with ultra low friction
• Impedance: 1,66 / 1,7 mH a 20 °C
• Temperature: -15°C ÷ 120 °C
• Voltage: 6 V ÷ 16 V
• Seal: Rubber on metal
• Approval: R67-01 and R110
One Touch changeover switch
• SMD single-stable changeover switch
• ø outside 26 mm
• Possible installations:
– built-in with ø 23 mm hole and 2 mm dimension
• With integrated Acoustic indicator (buzzer)
• N° 4 green Leds for level indication
• N° 1 bi-colour (green/red) Led for mode working indication
PTS Sensata sensor (on rail) low pressure LPG / CNG
• Gas temperature and pressure sensor
• Mass: 22 g
• Overall dimensions: ø= 24 mm, h= 64,5 mm
• Integrated connector
• Power Supply Voltage: 5 ± 0,1 VDC
• Supply Current: 10 mA MAX
• Output Voltage Range (pressure): 0,5 to 4,5 V
• Operating temperature -30 °C ÷ 130 °C
• Approval: R67-01 – R110
Technische Eigenschaften
| Supply | LPG |
| Cylinders | 3-4-6- 8 (Using two ECUs 4-cylinder) |
| Gas ECU | AFC-3.0 DI |
| Gas ECU Connector | n° 3 Molex 32pin/32pin/48pin |
| Gas Ecu Body Material | Aluminium - Plastic |
| Gas Shut-off Solenoid Valves | 2 |
| Reducer - Fittings inlet outlet elbows | Plastic |
| Internal Petrol Injectors Emulation | DI: Inductive - MPI: Resistive |
| Gas Temp. Input | ✓ |
| Gas Pressure input | ✓ |
| Water Temperature Sensor on Reducer | ✓ |
| N° Lambda Oxygen Input | 2 |
| RPM Signal | ✓ |
| MAP Sensor | only electrical connection |
| CNG Internal Timing Advance Processor (*) | ✗ |
| Communication with OBD (K and CAN) | ✓ |
| Sequential Fuel Switch OVER | ✓ |
| Injectors Rail | Plastic |
| Injectors Type | IN03 MY09 |
| Gas Level Indication | Switch |
(*) For using CNG Timing Advance Processors please make reference to respective Sequent systems handbooks
(**) Required only for specific vehicles model
