Chery SQR472F Gasoline Engine 1.1L Inline Four Cylinder Naturally Aspirated

Full Introduction to Chery SQR472F (1.1L Inline-4 DOHC 16-Valve) Engine

Physical Assembly of SQR472F Engine Overall Exterior of Complete Engine Power & Torque Characteristic Curve

I. Basic Background

The SQR472F is a self-developed 1.1L inline four-cylinder naturally aspirated gasoline engine by Chery, the core mass-production model of the 472 series. It was officially fitted to vehicles starting in 2006, matching micro and compact cars including QQ3 1.1L, QQ6 and Flagcloud 1. It was designed to fix the drawbacks of the 0.8L three-cylinder SQR372F, namely severe vibration and insufficient power, positioning itself as a balanced powertrain for daily commuting and low-cost commercial use. It features a cast iron cylinder block paired with an aluminum alloy cylinder head, DOHC dual overhead camshaft with 16 valves, and MPI multi-point port injection without VVT variable valve timing. Boasting a compact layout, its four-cylinder design delivers far less inherent vibration than three-cylinder engines. It runs on 92# gasoline and supports LPG gas conversion. Later versions comply with China National IV emission standards, and it was gradually phased out around 2015 alongside the discontinuation of microcars. The suffix "F" stands for an optimized mature mass-production version with upgraded intake, electronic control and cooling systems.

II. Core Technical Specifications

III. Comparison with Same-Platform

Model (SQR472F vs 0.8L Three-Cylinder SQR372F) Cylinder Count & Smoothness SQR472F: Four-cylinder design with mild idle vibration and barely noticeable shake when the air conditioner is turned on SQR372F: Three-cylinder design with obvious inherent vibration and loud noise at high revs Power Reserve With larger displacement, the SQR472F delivers noticeably stronger power under full load, during hill climbing and high-speed re-acceleration, enabling more relaxed highway cruising. Cylinder Block Material SQR472F: Cast iron block with high pressure resistance, resistant to deformation after long-term gas conversion SQR372F: Full aluminum lightweight block with weaker pressure tolerance Shared Maintenance Features Both adopt timing belt designs requiring full kit replacement at 60,000 km. Neither is equipped with VVT, featuring simple structures and low repair costs.

IV. Core Technical Highlights

DOHC 16-Valve Four-Cylinder Layout A rare four-cylinder 16-valve configuration among microcars of its class. The dual overhead camshaft delivers high intake and exhaust efficiency, offering smoother high-rev power and ample high-speed reserve compared with single-cam 8-valve engines. Reinforced Cast Iron Cylinder Block It features excellent wear resistance, high-temperature resistance and deformation resistance, delivering outstanding durability under long-term full-load mountain driving and taxi LPG conversion conditions, with low risks of cylinder scoring or blown head gaskets. Mature MPI Multi-Point Port Injection Gasoline continuously flushes intake valves to slow carbon buildup. Only regular throttle cleaning is needed; it works stably even with low-quality 92# gasoline and has wide fuel compatibility. Inherent NVH Advantages of Four-Cylinder Design Compared with the 0.8L three-cylinder SQR372F, idle vibration and noise are drastically reduced for better daily driving comfort. Ultra-Compact Modular Structure Its compact overall dimensions fit the tight engine bays of microcars including QQ and Flagcloud 1. It can also be exported as power equipment for small sightseeing vehicles and light generator sets. Ultra-Simple Mechanical Structure Free of turbochargers, variable valve systems and high-pressure fuel injection components, it uses universal, low-cost spare parts and can be repaired at any local independent repair shop.

V. Full Range of Equipped Vehicles

Passenger Vehicles Chery QQ3 1.1L (QQ311), Chery QQ6 1.1L, Chery A1, Chery X1, Chery M1, Flagcloud 1 1.1L, Karry Youyou / Youya micro vans Off-Road & Industrial Supporting Equipment Small four-wheel sightseeing vehicles, light generator sets, small engineering machinery Transmission Matching Manual: 5-speed manual transmission (5MT, mainstream fitment) Automatic: 5-speed AMT semi-automatic mechanical transmission

VI. Power and Fuel Consumption Performance

Power Characteristics This small-displacement naturally aspirated engine is tuned for high-rev operation, with peak torque concentrated at 3500–4000rpm. Low-speed torque below 2000rpm is weak, resulting in mediocre performance when climbing hills under full load with the air conditioner activated. Power output becomes linear above 3000rpm, with superior high-speed overtaking reserve versus the 0.8L three-cylinder model. The four-cylinder layout delivers good balance with barely perceptible idle shake and controllable high-rev noise, making it ideal for short-distance urban commuting. Real-World Fuel Consumption Recorded by Vehicle Owners 5MT Manual: Combined 6.0~6.8L/100km; urban 7.2~8.4L, highway 5.4~6.2L AMT Semi-Automatic: Combined 6.5~7.4L/100km; urban 8.0~9.2L, highway 5.8~6.6L