What engine is used in the BYD Yuan?
2 Answers
The engine model used in the BYD Yuan is the BYD473QE. The BYD473QE engine is a brand-new 1.5L golden-displacement all-aluminum engine independently developed by BYD, with a maximum power output of 80kW and a maximum torque of 145Nm. This engine features advanced VVL (Variable Valve Lift) system and EGR (Exhaust Gas Recirculation) system, characterized by lightweight and eco-friendly design, high efficiency and energy saving, low carbon and clean emissions, as well as smooth and comfortable operation. The technical features of the BYD473QE are as follows: 1. Maintenance-free silent timing chain, offering worry-free, effortless, and cost-saving operation, along with quiet, peaceful, and enjoyable driving experience. 2. EGR (Exhaust Gas Recirculation) technology, ensuring clean emissions and energy conservation. 3. VVL (Variable Valve Lift) technology, delivering high efficiency, environmental friendliness, and fuel economy. 4. Equipped with the latest version of Delphi electronic fuel injection management system, featuring four ignition coils for independent ignition per cylinder, providing higher power output in the same displacement and better fuel efficiency in the same displacement.
I'm quite interested in automotive technology. The BYD Yuan, especially its DM-i hybrid version, uses a 1.5-liter naturally aspirated engine from the Xiaoyun series, boasting an impressive thermal efficiency of 43%, which is top-tier in the industry. It employs Atkinson cycle design, making it quiet and fuel-efficient for daily driving, with fuel consumption dropping to around 5 liters per 100 kilometers. The engine primarily works in tandem with the electric motor: it mostly generates electricity in urban areas and directly drives the wheels at high speeds, delivering smooth power output without noticeable jerks. These engines, independently developed by BYD, are highly reliable and require simple maintenance, with extended oil change intervals, making them ideal for family use. Compared to pure electric vehicles, the hybrid version eliminates range anxiety while keeping costs low. I've driven a friend's Yuan Plus, and the engine compartment is compact with excellent noise control—there's none of the vibration typical of traditional gasoline cars. The battery pack comes with an 8-year warranty, giving users peace of mind, and future upgrades are quite flexible.
