EF40 EFI

Electronic Fuel Injection (EFI) System

The HDEF40 EFI employs a programmed electronic fuel injection (EFI) system, incorporating the mature and reliable Delphi electronic fuel injection solution. It precisely controls ignition timing during startup, achieving superior overall performance, delivering rapid throttle response and excellent fuel economy.

Quick Start

The electronic fuel injection system automatically adjusts the air-fuel ratio, enabling quick and easy starting and warm up.No complicated operations are required; simply turn the key to start immediately.

Quieter Operation

The Reverse Exhaust Relief system directs exhaust gases into the water via the propeller, effectively reducing operating noise and making the engine run quieter and smoother, thus improving overall boating comfort.

Engine Warning System

The engine warning system continuously monitors key operating parameters and issues timely warnings when abnormal conditions such as overheating or low oil pressure etc, reducing the risk of engine damage and improving safety and reliability.

High Thrust Gear Ratio Design

The HDEF40 EFI features a higher gear ratio design, delivering strong thrust in both forward and reverse driving conditions, effectively improving maneuverability and overall performance to meet diverse navigation and operational needs.

Cruising Fuel Economy

The multi-point fuel injection system（MPI） and long air intake work together to automatically adjust the air-fuel ratio according to engine speed and load, maximizing power across the entire speed range. At cruising speeds, it can save up to 20% on fuel consumption compared to comparable products, balancing power output and operating costs.