奥迪A4ppt奥迪A4发动机

1、发动机,4 inline 1.6l (75 kW),4 inline 2.0l (96 kW),4 inline 1.8T (110 kW),V6 3.0l (162 kW),V6 2.4l (121 kW),4 inline 1.9l TDI (74 kW),4 inline 1.9l TDI (96 kW),V6 2.5l TDI (132 kW),V6 2.5l TDI (114 kW),汽油机,柴油机,Engines for model launch,Engines (subsequent to start of production),2.0 MPI 5V,Modifications

2、 to the 1.8 5V engine: new aluminium crankcase balancing shaft in the sump modified switch-over intake system cylinder head with ladder frame continuously variable camshaft (intake only) mapped cooling,Output 96 kW (130 bhp) at 5,700 rpm Torque 195 Nm at 3,300 rpm,1.8T (110 kW): adopted from previou

3、s A4 mapped cooling,3.0 MPI 5V,Modifications to the 2.8 5V: new aluminium crankcase increase of swept volume to 3 litres balancing shaft in the sump modified switch-over intake system cylinder head with ladder frame continuously variable camshaft (intake and exhaust) camshaft drive by toothed belt (

4、no chain between the intake and exhaust camshafts),Output 162 kW (220 bhp) at 6,300 rpm Torque 300 Nm at 3,200 rpm,2.4 (121 kW): adopted from previous A4,1.9 TDI 2V PD,Adopted from 1.9 TDI PD A3,1.9 TDI (74 kW): 1.9 TDI PD is the basic engine,Output 96 kW (130 bhp) at 4,000 rpm Torque 285 Nm at 1,75

5、0-2,500 rpm*,*quattro 310 Nm at the same engine speed,2.5 TDI 4V,Adopted from A6 2.5TDI 132kW Only available as quattro,Output 132 kW (180 bhp) at 4,000 rpm Torque 370 Nm at 1,500-2,500 rpm,2.5 TDI (114 kW): The 2.5 TDI (132 kW) is the basic engine,2.0 MPI 5V (EU4),Top speed, km/h 212 205 Accelerati

6、on 0-100 km/h, s 9.9 10.2,Max. power output 96 KW (130 bhp) at 5700/min Max. torque 195 Nm at 3300/min,5-speed, FWD multitronic, FWD,Consumption acc. to 99/100/EC, l/100 km - urban 11.4-11.6 10.9-11.0 - extra-urban 5.9-6.1 6.2-6.3 - total 7.9-8.1 7.9-8.0 CO2 emissions 190-194 190-192,Contents,3.0 MP

7、I 5V ( EU4),Top speed, km/h 245 238 Acceleration 0-100km/h, s 6.9 6.9,Max. power output, kW (bhp) 162 (220) at 6300/min Max. torque 300 Nm at 3200/min,5-speed, FWD multitronic, FWD,Consumption acc. to 99/100/EC, l/100 km - urban 13.7-13.9 13.6-13.7 - extra-urban 7.1-7.3 7.0-7.1 - total 9.5-9.7 9.4-9

8、.5 CO2 emissions 228-233 226-228,Contents,Contents,长进气道 发动机在低转速时，空气经过长的进气道，使气缸充气最佳，且扭矩增大。,短进气道 发动机在高转速时，空气流经短进气道，可提高效率。,真空单元,进气道,2.2新技术,2.2.1可变进气道,1 - 油封 更换 注意安装位置 2 - 10 Nm 3 - 10 Nm 4 - O 型环 用于喷油阀 更换 5 - 燃油分配管 带喷油阀 6 - 10 Nm 7 - 10 Nm 8 - 上部冷却液管 9 - 10 Nm,10 - O型环 用于上部冷却液管 更换 11 - 进气管 检查转换功能: 12 -

9、 20 Nm 13 - Sttze 用于进气歧管 14 - 25 Nm,1 - 真空控制单元 2 - 压力弹簧 3 - 转换辊 4 - 进气歧管 5 - 单向阀 安装位置 蓝色一侧朝Y件 6 - Y-件 7 - 进气歧管转换阀-N156,8 - 10 Nm 9 - 固定板 10 - 橡胶套 11 - 隔套 12 - 垫圈 锥面朝进气歧管 13 - 油封 损坏时，必须更换 14 - 油封 用于转换辊 15 - 6 Nm,扭矩,带进气歧管转换的发动机扭矩曲线,固定式进气歧管的扭矩曲线,扭矩,功率,功率,带进气歧管转换的功率曲线,固定式进气歧管的功率曲线,扭矩,功率,进气门开、关时刻： 发动机转速低

10、时，进气管内混合气随活塞运动，活塞运动慢 。 进气门应提前关闭，以避免混合气回流进气管。 发动机低速时，进气凸轮轴相位应提前调整。,2.2.3可变进气相位,进气门开、关时刻： 发动机转速高时，进气管内气流快，活塞在向上运动过程中，混合气应可继续涌入气缸，为增加混合气量，进气门延迟关闭。,排气凸轮轴,进气凸轮轴,凸轮轴调节阀N205,液压缸,排气凸轮轴,进气凸轮轴,凸轮轴调整器 （与链条张紧器一体）,功率调整 调整功率时，链条下部短，上部长，进气门延迟关闭。 进气管内气流速高，气缸充气量足。 因此高转速时，功率大。,排气凸轮轴,进气凸轮轴,凸轮轴调整器,扭 矩调整 凸轮轴调整器向下拉长，于是链条上部变短，下部变长。 因为排气凸轮轴被齿形带固定了，此时排气凸轮轴不能被转动，进气凸轮轴被转一个角度，进气门提