Electronic fuel injection systems for UAV engines
Explore Lö EFI components and configurations. Share your engine model and integration requirements to discuss compatibility.
Configure an EFI system for your engine
Select the throttle body, ECU, sensors, fuel system and wiring for your installation.
Our team can help you confirm the required components.
Lö EFI kit, light and reliable
Highly configurable, for engine types from 10 to 500 cc: two-stroke, four-stroke, single cylinder, boxer, heavy-fuel and wankel.
Lö EFI KIT ITEMS
- Electronic Control Unit (ECU)
- Fuel injector
- Fuel pump
- Pressure regulator
- CNC Throttle body (with servo)
- Cylinder-head Temperature sensor (CHT)
- Fuel filter
- Wiring loom with air temperature sensor
- Bluetooth dongle HC05
- EFI map calibration project
System Components
Compatibility depends on the exact engine and installation. Confirm the kit contents, supply voltage and interfaces with our team before ordering.
Throttle body
Throttle bodies for UAV engines:
We have an extensive range of throttle bodies that start from 7mm for 10cc engines to 40mm for 500cc engines.
All our throttle bodies are CNC machined and have the servo directly coupled to the throttle valve.
Wiring loom
Our wiring looms are made with PTFE cables and fine silver-coated conductors. The wiring is manufactured to the highest quality standards to withstand vibrations without failure.
CHT
We have a range of CHT sensors to suit all engines. Installing the CHT in small engines that are not prepared for them is a challenge, that is why we have different designs that fit at the base of the spark plug or in the exhaust port depending on the engine.
ECU
Our ECU features an extremely compact design with a machined aluminum casing, suitable for a wide range of engines including 2 or 4-stroke, piston or Wankel, with multiple cylinders. It seamlessly integrates with UAV systems, boasting compatibility with Ardupilot for simplified implementation. Communication with the ECU for in-flight monitoring and control is straightforward, facilitated by serial and CAN interfaces providing real-time engine telemetry and precise control commands.
SPECIFICATIONS:
Operating voltage: confirm for your ECU version
Weight 43gr
Length 35 mm
Width 30 mm
Height 15 mm
Impeller Fuel Pump
Our impeller pump is a set that includes both the pump and the pressure regulator. This is a small-sized brushless pump capable of handling engines up to 180cc.
Gear Fuel Pump
The gear pump is an option for the most demanding applications. It offers the practical feature of self-priming, which is very useful. This is also a brushless pump; in this case, the pressure regulator is an external component.
Product configurations
Lö EFI kit TB9
Throttle body diameter: 9 mm.
Electronic regulator
Examples of compatible engines: RCGF 10 / Stinger 10 , RCGF 15 / Stinger 15, DLE20.
Lö EFI kit TB9 Saito
Throttle body diameter: 9 mm.
Electronic regulator
Examples of compatible engines: Saito FG-14, Saito FG-21.
Lö EFI kit TB12
Throttle body diameter: 12 mm.
Examples of compatible engines: Saito FG-30B, RCGF 20, Stinger 20 Twin.
Lö EFI kit TB14 AS
Throttle body diameter: 14 mm.
Examples of compatible engines: Zenoah G290, DLE 35, RCGF 35 RE.
Lö EFI kit TB15.5 AS
Throttle body diameter: 15.5 mm.
Examples of compatible engines: Zenoah G290, Zenoah G320, RCGF 35 RE.
Lö EFI kit TB16T
Throttle body diameter: 16 mm.
Examples of compatible engines: DLE 60, DA70, DA50, RCGF 70 / Stinger 70.
Lö EFI kit TB20T
Throttle body diameter: 20 mm.
Examples of compatible engines: DLE 120, DA120, GP123, RCGF 125 T / Stinger 125 twin.
Lö EFI kit TB25T
Throttle body diameter: 25 mm.
Examples of compatible engines: DA150, DA170, DLE 170.
Lö EFI kit TB18+18
Throttle body diameter: 18 mm + 18 mm (for 2 stroke / 4 cylinder engines)
Examples of compatible engines: MVVS190, DLE222.
Lö EFI kit TB24+24
Throttle body diameter: 24 mm + 24 mm (for 2 stroke / 4 cylinder engines)
Examples of compatible engines: MVVS350, ZDZ500.
Lö EFI kit TB34
Throttle body diameter: 34 mm (for 2 stroke / 4 cylinder engines)
Examples of compatible engines: 3w342, JRDT 351CC, HongFei HE350.
Lö ECU, maximum functionality
The Electronic Control Unit of the EFI ensures an optimal engine performance, while keeping its weight to the minimum.
Lö ECU INPUTS
- Crank sensor
- Throttle position (TPS)
- Analog input (gen. purpose or O2 sensor)
- Cylinder head temperature (CHT)
- Manifold temperature (MAT)
Safer than carburetors
Lö EFI is very easy to adjust so that fuel consumption is optimal
The EFI ensures optimum engine performance, lower consumption and adaptability to a wider range of environmental conditions.
Lö EFI V1.1 specs
Software Features
- ISO 15765-4 CAN (11 bit ID, 500 kbaud) protocols supported
- Alpha-n strategy with multi-variable compensation
- Rev limiting
- Real-time engine telemetry data
- Based on reliable automotive ECU systems
- Ardupilot supported
Hardware Features
- 12 to 14V
- Single injector output
- 6 to 12V pump control output
- Internal barometric pressure sensor
- 5V crank input (for hall sensors)
- CAN and Serial communications
- Custom CNC and 3D printed throttle bodies
Lö EFI integration
Supported by Ardupilot
The parameters from the EFI status can be received on Mission Planner, QGround Control and similar Ardupilot related software.
Lö EFI PARAMETERS
- Barometric pressure
- Cylinder head temperature (CHT)
- ECU index
- Engine load
- Exhaust gas temperature
- Fuel consumed
- Fuel flow
- Health
- Ignition timing
- Injection time
- Intake manifold pressure
- Intake manifold temperature
- PT compensation
- RPM
- Spark dwell time
- Throttle OUT
- Throttle position (TPS)
Find the right EFI configuration
Send your engine model and intended application so we can review compatibility.
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