CY4102BQ Diesel Engine General Situation Model CY4102BQ is a high speed diesel engine developed by DCD on the reference of Japan ISUZU 4BD1 diesel engine designing ideology and concept, the launch of this engine meets the demand of auto market to 2-3 ton light-duty diesel vehicles. In the meantime, due to the change of international finance market, this makes some Southeast countries switch over to purchase 2-3 ton light-duty diesel vehicles from China,which greatly opens up the overseas market for CY4102BQ diesel engines CY4102BQ diesel engine features high power index and good economy. It is the ideal power for 2-3 ton payload trucks, 6-7m buses, tourist buses and intercity buses as well. According to customer requirements,auxiliary devices such as air brake ,oil brake, air compressor,warm air heater and power steering pump etc.can be installed. Cylinder block is an integral casting part with crankcase, with full support bearing caps and dry cylinder liners.Cylinder head is of integral 4-cylinder type.Crankshaft is of nodular cast iron with surface nitriding treatment.Piston top is of hot flow type, the skirt section has oval barrel curved surface,the down section is of slipper structure,with two compression rings and one oil ring.Valve mechanism is of overhead type. Injection pump adopts Bosch A type pump. Injector is of long body closed type, with holes 4×Φ0.30mm, opening pressure 19.1±0.45MP(195±5kgf/cm2). Oil pump is of gear drive type. Oil filter is of helical one-time use can. Oil cooler is of plate case type. Water pump is of centrifugal type, with wax type thermostat.