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批发日本原装口yamaha 雅马哈船外机 橡皮艇动力船用发动机4冲程6马力10000元
卢先生 电话 178-17356015 QQ 851593024
Engine type OHV 1 cylinder ?Displacement 139cc ?Bore and stroke 62.0mm x 46.0mm ?Compression ratio 8.9 ?Starting device - manual choke ?Fuel induction system 1 - Carb ?Built in t=ank capacity 1.1 litre ?Male fuel connector fitted as standard for remote tank ?Lubrication system - Wet sump ?Engine oil capacity - 0.6 litre without oil filter ?Ignition system CDI ?Spark Plug CR6HSB ?Alternator (Optional) 12V - 6 amp with rectifier regulator ?Cooling system - raw water, ermostatically controlled ?Exhaust system - above prop ?Trim positions 5 steps ?Shallow water drive positions 3 steps ?Steering angle 90 degrees each direction ?Gear shift F-N-R ?Gear ratio 2.08 (27/13) ?Propeller fitting - spline
四冲程是指进气 压缩 做功和排气.这是一个燃烧循环的4个阶段.由于每一燃烧循环由4个阶段组成,因此,与二冲程发动机发动相比,四冲程发动机噪声较低,运转更平稳,燃油效率更高,产生的排放物也较少.四冲程发动机通常缺少二冲程发动机的扭矩 扭力和爆发力.
总的来看,二冲程摩托车的特点是:发动机体积小、重量轻、功率大、油耗大、排放高,结构简单,制造、维修方便,价格便宜。四冲程摩托车的特点是:体积大、结构复杂,油耗低,排放低,制造、维修较麻烦,价格相对较高。