Chery SQRE4G15C DVVT Vehicle Engine Assembly 1.5L DOHC Naturally Aspirated MPI

Full Introduction to Chery SQRE4G15C 1.5L DVVT Naturally Aspirated Engine

I. Basic Background

The SQRE4G15C is a second-generation ACTECO 1.5L naturally aspirated power unit. It is an upgraded version of the SQRE4G15B compliant with China National VI b emission standards. Developed specifically for entry-level commuter vehicles, it has been mass-installed on vehicles since 2019 and mainly equips cost-effective family sedans, compact SUVs and entry-level models under Kaiyi and Jetour brands. This engine adopts a cast iron cylinder block matched with an aluminum alloy cylinder head and MPI multi-point port injection. It features no turbocharger or high-pressure direct injection system, delivering a simple mechanical structure with extremely low failure rates. Compatible with 92# unleaded gasoline and LPG gas conversion, it serves as Chery’s mainstream volume-selling powertrain for entry-level vehicles and meets China National VI b emission standards. It comes standard with dual DVVT variable valve timing and a VIS variable-length intake manifold.

II. Core Technical Specifications

SQRE4G15C 1.5L NA DVVT

Structure Inline four-cylinder, water-cooled four-stroke, DOHC dual overhead camshaft, 16 valves (4 valves per cylinder), dual DVVT intake & exhaust variable valve timing Displacement 1499mL (1.5L) Bore × Stroke 77mm × 80mm Compression Ratio 11:1 Valve Train System Dual DVVT + VIS variable-length intake manifold + EGR exhaust gas recirculation Fuel Supply System MPI multi-point manifold port injection Maximum Power 85kW (116 hp) @ 6150rpm Peak Torque 143N·m @ 4000rpm Timing Mechanism Silent timing chain; inspect chain elongation at 150,000 km with no mandatory replacement required Cylinder Block / Cylinder Head High-strength wear-resistant cast iron cylinder block + full aluminum cylinder head Engine Oil Capacity 3.8~4.1L; mineral, semi-synthetic and full-synthetic 5W-30/5W-40 oils are all factory-approvedFuel Grade 92# unleaded gasoline, compatible with LPG natural gas conversion Emission Standard China National VI bMaximum Thermal Efficiency 37.1%Start-Stop Configuration Automatic start-stop supported across all fitted models

III. Core Upgrade Differences from the Older SQRE4G15B

Emission Optimization: EGR exhaust gas recirculation is newly added; the three-way catalytic converter and ECU calibration are optimized to upgrade compliance from China National V to National VI b. Slightly Increased Torque: The 4G15B generates 141N·m while the 4G15C is upgraded to 143N·m for mild improvement in mid-range power. Optimized Intake System: The control logic of the VIS manifold is upgraded to boost low-speed intake efficiency and slightly cut urban fuel consumption. NVH Noise Reduction Optimization: Timing chain dampers and hydraulic lifters are calibrated to lower idle noise and vibration. Fine-tuned Cooling System: Optimized water channels reduce the risk of overheating during prolonged traffic jams.

IV. Core Technical Highlights

Dual DVVT Intake & Exhaust Variable Valve Timing It synchronously adjusts the phase of intake and exhaust camshafts to enhance low-speed intake efficiency and boost high-rev air intake volume. It balances smooth takeoff and high-speed cruising power while mitigating idle vibration. VIS Variable-Length Intake Manifold Long intake passages are activated at low speeds to lift low-end torque, and short passages are switched on at high speeds to raise intake airflow, improving mid-range acceleration below 4000rpm. EGR Exhaust Gas Recirculation It lowers combustion temperature to cut nitrogen oxide emissions and meet National VI b standards, while slightly optimizing fuel economy. Reinforced Cast Iron Cylinder Block Wear-resistant and deformation-resistant, it resists abrasion under long-term full-load and mountain driving conditions, offering outstanding reliability after gas conversion for commercial vehicles. MPI Multi-Point Port Injection Gasoline continuously flushes the intake valves, avoiding severe carbon buildup troubles common to direct-injection engines. It enables longer maintenance intervals and strong fuel compatibility. Silent Timing Chain It eliminates timing belts and requires no replacement throughout its service life, saving the high cost of timing kit replacement at 60,000 km and lowering long-term maintenance expenses.

V. Full Lineup of Equipped Vehicles

Chery Sedans Arrizo 5, Arrizo 5 PLUS, National VI version of Arrizo GX 1.5L Chery Compact SUVs Tiggo 3x, entry-level naturally aspirated 1.5L variant of Tiggo 5x Kaiyi / Jetour Models Kaiyi Xuanjie, base 1.5L Jetour X70 Transmission Matching Manual: 5-speed manual transmission (5MT) Automatic: 9-speed CVT continuously variable transmission (Wanliyang CVT)

VI. Power & Fuel Consumption Performance

Power Characteristics This engine is tuned for mid-to-high rev operation and delivers peak torque at 4000rpm. Low-speed torque below 1500rpm is weak, resulting in mediocre power reserve under full loads, hill climbing and high-speed re-acceleration. Its power output is linear and smooth within the 2000–4000rpm range, making it suitable for mild urban commuting rather than aggressive overtaking. The 5MT manual transmission delivers crisp shifts with low power loss; the CVT offers smooth, gentle driving and lower cruising RPM at highway speeds. Real-World Fuel Consumption Recorded by Vehicle Owners Sedans with 5MT: Combined 6.0~6.8L/100km; urban 7.2~8.5L, highway 5.6~6.3L SUVs with CVT (Tiggo 3x): Combined 6.8~7.6L/100km; urban 8.6~10L, highway 6.2~7.0L

VII. Core Advantages of the Engine

Ultra-Simple Structure & Extremely Low Failure Rate Without turbochargers or high-pressure direct injection systems, it suffers few mechanical malfunctions. Numerous taxis and online car-hailing vehicles have covered 200,000 to 300,000 kilometers without major overhauls. Maintenance-Free Timing Chain Compared with the timing belt fitted on the SQR484F engine, it eliminates the substantial recurring cost of regular timing kit replacement. Broad Fuel Compatibility Stable long-term operation on 92# gasoline; highly suitable for LPG gas conversion and the top choice for commercial vehicles. Extremely Low Maintenance Costs Massive stock of spare parts including aftermarket and used engine components is widely available. Repairs can be completed at any local repair shop with affordable consumables. Durable Cast Iron Cylinder Block Resistant to cylinder scoring and blown head gaskets under prolonged short-trip, congested and mountain road driving. Simple Carbon Deposit Maintenance Only periodic throttle valve cleaning is required; intake valve disassembly cleaning is unnecessary, bringing simple and cost-saving maintenance procedures.