KYACTIV-D is a family of turbocharged diesel engines, designed to comply with global emissions regulations.
To eliminate the need of NOx and particulate treatment in contemporary diesel engines, the cylinder compression ratio is reduced to 14.0:1. Cold engine start is achieved via multi-hole piezo injectors with 3 programmable injection patterns, adoption of ceramic glow plugs. Engine misfiring is prevented via variable valve lift at exhaust, which opens exhaust valves during the intake stroke, which increases engine air temperature. SKYACTIV-D also uses a two-stage turbocharger in which one small and one large turbo are selectively operated according to driving conditions.
The SKYACTIV-D 2.2 (SH-VPTS) engine is the first SKYACTIV-D engine used in production vehicles. It was first used in Mazda CX-5. In the Mazda6, it produces 129 kW (173 hp) and 420 N·m (310 lb·ft).
Hyundai:
The 2.2L R-Engine is a 4-cylinder all-aluminum (block and cylinder head) unit, with chain driven dual overhead camshafts operating 4-valves per cylinder. Fuel is supplied to the unit using Bosch 3rd-generation common rail direct injection (CRDi) through piezo-electronic injectors operating at 1800 bar, with air being fed through an electronically managed variable geometry turbocharger and an advanced engine control unit (air system-based charge control).
Bore and Stroke are 85.4 mm (3.4 in) x 96.0 mm (3.8 in) for a total displacement of 2199 cc.
It generates 147 kW (200 PS; 197 hp) of power and 436 N·m (322 lb·ft) of torque作者: baikal 时间: 2013-8-31 21:14:47