SQR472 SQR372 1.1L Petrol 4 Cylinder DOHC Valvetrain Layout Car Engine Assembly for Chery Geely Bus

The SQR472 and SQR372 are compact, 1.1L, 4-cylinder petrol engines developed for use in a variety of vehicles, notably within the Chery and Geely brands. These engines are designed with a DOHC (Double Overhead Camshaft) valvetrain layout, which enhances performance by optimizing airflow and engine efficiency, particularly at higher RPMs. Below is a detailed description of their features:
Engine Overview:
Displacement: 1.1 liters (1100cc)
Cylinder Configuration: Inline 4-cylinder
Fuel Type: Petrol
Valvetrain: DOHC (Double Overhead Camshaft)
Aspiration: Naturally aspirated
Cooling System: Liquid-cooled
Fuel System: Multi-point fuel injection (MPFI) for precise fuel delivery and better fuel efficiency.
Bore x Stroke: Typically optimized for balance between power and efficiency
Design Features:
DOHC Configuration: The use of double overhead camshafts allows for precise control of the intake and exhaust valves. This improves engine breathing, reduces valve overlap, and helps increase overall power output while maintaining fuel efficiency.
4-Cylinder Layout: The inline 4-cylinder design ensures a smooth and balanced engine performance. It’s compact, lightweight, and offers good power output relative to size, making it ideal for small to mid-sized cars and buses.
Engine Components:
Cylinder Block: The engine block is constructed to endure the stresses of daily operation, offering long-term durability.
Crankshaft and Connecting Rods: Designed for smooth operation and efficient power transfer from the combustion process to the drivetrain.
Pistons: Lightweight pistons help reduce the overall weight of the engine, improving fuel economy and overall engine responsiveness.