|
|
OPERATION AND MAINTENANCE MANUAL FOR FOTON VIEW SERIES LIGHT BUS
·24· 1.2.1.6 Cooling system Cooling system is to radiate heat from excessive heat parts, so as to ensure a normal working temperature of engine and avoid damage to its mechanical parts and other adverse influences. BJ491EQ1 multi point electronic fuel injection gasoline engine adopts a forced water-cooling method. The cooling system is mainly composed of cylinder block and water jacket in cylinder head, water pump, fan, radiator, thermostat and silicon oil fan clutch etc. 1.2.1.7 Ignition system Ignition system is to generate electric sparks to ignite the air-fuel mixture inside cylinder timely. The ignition system is composed of battery, spark plug, ignition coil and high resistance cable. 1.2.1.8 Starting system Starting system is to rotate crankshaft to a certain speed so as to suck combustible mixture into cylinder to enable ignition and combustion. The starting system is composed of starter, battery and other devices. 1.2.1.9 Electronic control fuel injection system Through various sensors, electronic fuel injection system input signals of air intake volume, crankshaft rotation / position and other auxiliary components to ECM. ECM processes these singals and commads auctators to get uptimum air-fuel ratio and proper ignition timing, and ignite the combustible mixture to obtain an ideal engine power performance, economical efficiency and emission index. 1.2.2 Specifications of gasoline engine Description BJ491EQ1 Type 4-stroke ,in-line,water cooling,wedge combustion chamber, EFI Number of Cylinders 4 Cylinder bore [mm] 91 Piston stroke [mm] 86 Displacement[L] 2.237 Rated output[kW/(r/min)] 76/4600~4600 Idle rpm [r/min] 800±50 Max torque[N·m/(r/min)] 193/2000~2600 Fuel rate RON93 or better ,non-leaded super gasoline Min fuel consumption [g/(kW·h)] ≤275 Oil rate SF or better 10W/30or 15W/40,and 5W/30 in winter Oil /fuel consumption rate [%] <0.8 Average piston speed [m/s] 13.19 Rotating direction of crankshaft Counter- clockwise Compression ratio 8.8:1 Anti-freezer Ethylene anti-freezer Oil volume (dry)[L] 4.2 |