Chery SQRE4G15B ACTECO 1.5L DOHC DVVT Naturally Aspirated MPI Gasoline Engine

Full Introduction to Chery SQRE4G15B 1.5L DVVT Naturally Aspirated Engine

SQRE4G15B Complete Engine Assembly

I. Basic Background

The SQRE4G15B belongs to the second-generation ACTECO 1.5L naturally aspirated powertrain. It is Chery’s core National V emission engine developed for entry-level commuter vehicles, mass-installed on vehicles from 2016 to 2019, and later replaced by its upgraded National VI b variant SQRE4G15C. This engine adopts a cast iron cylinder block paired with an aluminum alloy cylinder head and MPI multi-point manifold port injection. It has no turbocharger or high-pressure direct injection system, featuring a simple mechanical structure, low failure rate and affordable maintenance costs. Compatible with 92# unleaded gasoline and LPG natural gas conversion, it is widely fitted on online car-hailing vehicles and taxis with a huge market stock. It comes standard with dual DVVT variable valve timing and a VIS variable-length intake manifold, and is not equipped with an EGR exhaust gas recirculation system (not required for National V emission standards).

II. Core Technical Specifications

SQRE4G15B 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 Fuel Supply System MPI multi-point manifold port injection Maximum Power 85kW (116 hp) @ 6150rpm Peak Torque 141N·m @ 3800rpm Timing Mechanism Silent timing chain; inspect chain elongation at 150,000 km, no mandatory replacement required Cylinder Block / Cylinder Head High-strength wear-resistant cast iron cylinder block + full aluminum alloy 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 gas conversion Emission Standard China National VPeak Thermal Efficiency 36.8% Optional Configuration Automatic start-stop available (mid-to-high trim levels)Power, Torque & Power Curve Diagram

III. Core Differences from the Upgraded SQRE4G15C

Emission Hardware SQRE4G15B: Complies with National V, no EGR exhaust gas recirculation system SQRE4G15C: Newly added EGR system and upgraded three-way catalytic converter to meet National VI b standard Torque Calibration SQRE4G15B: 141N·m @ 3800rpm SQRE4G15C: 143N·m @ 4000rpm with mild optimization on mid-range power output NVH & Cooling System The SQRE4G15C features optimized timing chain dampers, hydraulic lifters and water channel design to lower idle vibration and reduce overheating risks in traffic jams. Electronic Control Calibration The SQRE4G15C optimizes VIS intake control logic for slightly lower fuel consumption under congested urban driving conditions.

IV. Core Technical Highlights

Dual DVVT Intake & Exhaust Variable Valve Timing It synchronously adjusts the phase of intake and exhaust camshafts to boost intake efficiency at low revs and increase air intake volume at high revs. It delivers smooth takeoff and sufficient power for highway cruising while mitigating idle vibration. VIS Variable-Length Intake Manifold Long intake passages are activated at low speeds to improve low-end torque, while short passages switch on at high speeds to raise airflow, enhancing mid-range acceleration below 3800rpm. Reinforced Cast Iron Cylinder Block It boasts outstanding wear resistance, high-temperature resistance and deformation resistance. It rarely suffers cylinder scoring or blown head gaskets under long-term short-trip congested driving, full-load mountain driving and gas conversion working conditions, offering better durability than full-aluminum naturally aspirated engines. MPI Multi-Point Port Injection Gasoline continuously flushes intake valves to eliminate the stubborn carbon buildup issue plaguing direct-injection engines. Only regular throttle valve cleaning is required, enabling simple and cost-saving maintenance procedures. Silent Timing Chain It replaces outdated timing belts with service-free design throughout its service life, eliminating the high cost of timing kit replacement at 60,000 km and cutting long-term maintenance expenses.

V. Full Lineup of Equipped Vehicles

Chery Sedans 2016–2019 Arrizo 5, early National V 1.5L Arrizo GX Chery Compact SUVs First-generation Tiggo 3x, early National V naturally aspirated 1.5L Tiggo 5x Entry-Level Kaiyi / Jetour Models National V Kaiyi Xuanjie, base 1.5L National V Jetour X70 Transmission Matching Manual: 5-speed manual transmission (5MT) Automatic: CVT continuously variable transmission (old Wanliyang CVT)

VI. Power & Fuel Consumption Performance

Power Characteristics This naturally aspirated engine is tuned for mid-to-high rev operation and only releases full peak torque at 3800rpm. Low-speed torque below 1500rpm is weak, resulting in mediocre power reserve under full-load hill climbing and high-speed re-acceleration. Its power delivery is linear and smooth within the 2000–3800rpm range, making it only suitable for mild urban commuting rather than aggressive overtaking. The 5MT manual transmission delivers low power loss for more responsive driving; the CVT offers smooth and gentle ride experience yet maintains higher RPM during highway cruising. Real-World Fuel Consumption Recorded by Vehicle Owners Sedans with 5MT: Combined 6.1~6.9L/100km; urban 7.3~8.6L, highway 5.7~6.4L SUVs with CVT (Tiggo 3x): Combined 6.9~7.7L/100km; urban 8.7~10.2L, highway 6.3~7.1L