Newly designed cylindrical combustion chamber and high-efficiency dual-tangential intake ports, paired with a 2000bar high-pressure common rail system. Strategic application of high- and low-pressure EGR, along with multiple friction-reduction measures, ensures more complete combustion and lower fuel consumption.
Optimized intake system
Dual-tangential ports improve airflow, increasing swirl ratio by 63% for enhanced fuel economy prominently.
On-demand oil pressure regulation reduces fuel consumption by 0.8%.
High- and low-pressure EGR
Combined with close-coupled after-treatment, lowers vehicle fuel consumption by 2%.
NVH
Aimed at delivering the most refined diesel engine sound, improvements in active and passive noise reduction achieve NVH levels comparable to gasoline engines.
Parallel backlash-reducing gear camshaft
Dual overhead parallel anti-backlash gear drive reduces gear vibration by 74% and cuts gear rattling noise by 4~5 dBA.
Timing system
Optimized pulley phasing reduces timing belt tension and meshing noise. The belt system operates quietly, complemented by an upper plastic/lower aluminum timing cover that effectively shields high- and low-frequency noise.
Rear Gear-Driven Balance Shaft
Incorporates a balance shaft for enhanced NVH refinement. Driven by a gear at the crankshaft rear, it reduces torsional excitation and gear noise, lowering overall mechanical noise by 2 dBA.
Fuel System & Top-End Acoustic Insulation
He high-pressure fuel pump, rail, and injectors are enveloped in passive noise-suppression wraps. Made from self-extinguishing flame-retardant material with a conforming design and optimized density for excellent sound damping.
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