The 306 range has been made more comprehensive by the addition of a new engine derived from the XU10J4R engine
This engine replaces the XU10J4 ACAV
Engine curves
A - частота вращения двигателя (об/мин)
B - power scale (кВт) по нормам ЕС
C - torque scale (Н.м) по нормам ЕС
D - максимальная мощность: 120 кВт при 6500 мин-1
E - максимальный крутящий момент: 193 Н.м (20 м.кг) - 5500 об/мин
Principal differences compared with the XU10J4R engine
Головка блока цилиндров
Based on the XU10J4R engine (different material) with improved ducts and combustion chambers in order to improve filling
Механизм ГРМ
Timing gear made lighter with modified valves
- At the inlet: identical diameters but different tulip shape for weight advantage
- At the exhaust: diameters 1 mm larger and different tulip shape for weight advantage
- All the valve stems have a smaller diameter, 6 mm instead of 7 mm to make them lighter
- New camshafts
- Lighter hydraulic tappets
The saving of weight in the timing gear permits higher valve opening and closing speeds
In addition the valve lift is increased, improving filling and the extraction of burned off gases
The spark advance curves are specific, allowing filling to be increased while at the same time observing emission control standards
Блок двигателя
Lighter pistons (compression ratio 10,8 instead of 10,4) with piston bases cooled by oil jet
The conrods are longer and lighter resulting in less friction and reduced inertia
Specific oil pump
Выпуск - впуск
Впускной коллектор
- Specifically aluminium
- Diameter of ducts 45 mm
- Expansion chamber in compound material
Tubular exhaust manifold of the 4 in 1 asymmetric type