Electronics various AEB 557 Overrun Cut-off LPG module

Details

AEB 557 RPM and TPS controlled cut-off device for LPG/CNG fuel systems

Overview
The AEB 557 Overrun Cut-off is an intelligent electronic module that shuts off the LPG vapour feed during engine overrun conditions. By reading both RPM (engine speed) and TPS (Throttle Position Sensor) signals, the unit decides when to temporarily cut the gas supply to improve efficiency and reduce emissions.

Key Features and Benefits

• Model: AEB 557.

• Function: shuts off LPG vapour flow during deceleration.

• Inputs: RPM and TPS signals.

• Saves fuel: prevents unnecessary LPG consumption.

• Protects engine: avoids backfire and overheating.

• Compatible with AEB, BRC, Lovato, OMVL, Landi Renzo, and other systems.

• Operating voltage: 12V DC.

• ECE 10R certified for road use.

• Compact waterproof design for easy installation.

Installation and Use
Install the AEB 557 module between the TPS sensor and the gas ECU. When the throttle is fully closed and the RPM exceeds the preset value, the device interrupts gas delivery to the vaporiser or injector rail. Once the throttle opens again, the gas feed is automatically restored.

Applications

• For LPG and CNG systems on carburetted or injected engines.

• Ideal for retrofit and professional LPG installers.

• Increases component lifespan and optimises system response.

The AEB 557 Cut-off module ensures efficient operation, fuel savings, and smooth transitions between acceleration and deceleration.