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1、Range Rover Sport,动力总成 V8 自然吸气 / 机械增压 发动机,学员手册第8部分 第5 71页,由中汽南方蒋凤石翻译,Powertrain V8 Engines N/A and S/C,Workbook section 8 Pages 5 71,目的 (动力传递部分),注意：本课程与另外一门课程（Denso发动机管理系统）共同组成发动机部分 的完整介绍。 描述4.4 NA和4.2 SC发动机的结构特性 介绍各种发动机技术参数 按照路虎公司政策进行发动机维修 正确使用专用工具,Objectives (Powertrain),Note: this course is desig
2、ned to run along side the Denso Engine management training programme Describe the Features of the naturally aspirated 4.4 litre and the 4.2 litre supercharged engine Describe the technical specification for all engines Carry out engine repairs in line with Land Rovers Policy Use special tools correc
3、tly.,概述,Page 9,General,Page 9,V8 汽油机,90 V型铝制缸体 铝制汽缸盖 每缸4气门 无垫片，挺杆直接作用 可变气门正时(VVT) 机械增压版上未安装 初级、次级链式驱动 铝制缸床 (阶梯型结构) 碎裂式连杆 两根V型驱动皮带 电控EGR (机械增压版未装) 引入机械增压 在Bridgend的发动机厂组装,Page 9,V8 Petrol Engine,90 Vee Aluminium cylinder block Aluminium cylinder heads - Four valves per cylinder Shim-less, tappet buck
4、ets Variable valve timing (VVT) not on supercharger Primary and secondary chain drives Aluminium bedplate (ladder frame) Fracture split connecting rods Twin multi-vee drive belts Electronic EGR (no EGR on supercharger) Supercharger introduced Built at the Bridgend engine plant.,Page 9,Base Engine,AJ
5、-41 V8 NA 发动机是 AJ-33 V8 NA 的改良版 新型 AJ-41/43 V8 发动机将投放所有市场 变更要点： 深式油底壳 修正FEAD(发动机驱动风扇) 排放标准达到欧4 US LEV II 修正EGR 15,000 英里机油保养 (欧洲), 7,500英里换机油(美国) 无回油管路系统 修正冷却水出口控制(throttle to different side of vehicle) 无垫片,Base Engine,AJ-41 V8 NA Engine is modified version of AJ-33 V8 NA The new AJ-41/43 V8 will be
6、 launched into all markets. Key V8 engine changes over the Jaguar version:- Deep Sump Revised FEAD (engine driven fan) Tail pipe emissions Europe & ROW Stage 4 US LEV II Revised Exhaust Gas Recirculation (EGR) 15,000 Mile Oil Service (Europe), 7,500 miles oil change in USA Returnless Fuel System Rev
7、ised water outlet (throttle to different side of vehicle) Shim-less tappets.,AJ41 V8 NA,发动机线束,加油管高度增加,改进的缸盖 改良水套,排气歧管,缸床,深式油底壳,初级FEAD皮带,具有滤清的油冷却器,次级发动机前发动机辅助驱动皮带（FEAD）,改进的节温器支架以适应节气门,节气门体,发动机罩盖安装支架,AJ41 V8 NA,Engine Harness,Oil Fill tube, Height increased,Modified Cylinder Head, improved ports and w
8、ater jacket,Fabricated Log Exhaust Manifolds,Structural bedplate,Deep sump,Primary FEAD drive,Oil Cooler with filter head,Second FEAD drive,Modified Thermostat housing to suit throttle elbow,Throttle Body and elbow,Engine cover mounting brackets,AJ41 V8 NA,修正的EGR管,变矩器连接处,起动机,AJ41 V8 NA,Revised EGR p
9、ipe,Torque converter access,Starter Motor,功率/扭矩数据L319-L320-L322,Power / Torque Figures L319-L320-L322,缸体,铸铝中缸，干式的钢质气缸内衬套，和4.4L NA发动机类似。 缸径尺寸由88mm改为86mm 机械增压款发动机加装了活塞机油喷射冷却装置。（在主油道上装有放油口，喷射冷却装置通过螺纹拧紧到放油口上。）该喷油装置位于活塞冠部下方。共四个喷油装置，每个有两个喷嘴。在4.4L NA发动机上的放油口没有精加工（因为没有必要使用机油喷射冷却装置）。,Page 14,Cylinder Block,A
10、luminium casting with iron dry liners similar to 4.4L NA; Cylinder bore size is 86mm instead of 88mm Piston cooling jets are bolted into tapings into the main oil gallery directed at the underside of piston crown. Four jets each have two nozzles. Tapings are left unmachined for 4.4L NA.,Page 14,缸号/发
11、动机数据,*SLHPT*CBBC* *22222211* *KMKMK* 000823 0756,曲轴轴颈等级,曲轴曲柄销等级,缸镗等级,日期/时间,曲轴轴承孔,发动机数据 左侧,Page 15,Cylinder numbering/engine data,*SLHPT*CBBC* *22222211* *KMKMK* 000823 0756,Main crankshaft journal grades,Crankshaft pin Grades,Cylinder bore Grades,Date / time,Main Crank bores,Engine data left hand si
12、de,Page 15,发动机数据 3个位置,发动机缸体上有两个 另外一个在发动机前盖上 如 0408232319AA 04 = 年 08 = 月份 23 = 日期 2319 = 时间 AA = 自然进气 SA = 机械增压,Engine Data 3 Locations,Two locations on cylinder block One on engine front cover Example of coding 0408232319AA 04 = 2004 08 = August 23 = Day 2319 = Time AA = Naturally Aspirated SA = Su
13、percharged,曲轴,活塞 铸造深式活塞 (压缩比 9.1:1)，活塞销22mm (NA发动机21mm) 活塞销固定卡簧和连杆小端轴承设计和4.4L NA 发动机一样 例如活塞销在飞溅润滑的铜套中浮动 和4.4L NA发动机一样镗缸有三个等级 可靠的油环（最底端的活塞环）控制 (4.4L NA发动机是相互分离的三活塞环设计). 连杆 22mm的连杆销直径与4.4L NA发动机不同； 将来会有两个连杆供应商，标记符号方面可能会有不同。 曲轴、曲轴轴承、连杆大头轴承 与NA发动机相同 (90.3mm行程),Page 16,Crankshaft,Pistons Forged deep dish
14、 piston (CR 9.1:1) with 22mm pin diameter. (21mm for NA) Design of piston pin retention (circlips) and little-end bearing same as 4.4L NA i.e. floating pin in splash-fed bronze bush. Three grades as 4.4L NA. Solid oil control (bottom) ring (4.4L NA is three piece segmented). Con rods Different to 4.
15、4L NA due to 22mm pin diameter. (Two rod suppliers in future transparent to service but some markings may differ). Crank, Main and Big-End Bearings, Same as NA engine (90.3 Stroke),Page 16,汽缸盖,铸造、加工及组装 同 4.4L 自然进气式 包括阀座、气门导杆、凸轮轴盖及油堵头(Avdel Plugs) 注意：对于机械增压发动机，每个缸盖均需一个额外的油堵头以堵住未用的VVT出油口。 气门、气门弹簧、气门琐销
16、 同 4.4L 自然进气式 凸轮轴 不同的进、排凸轮轴，SC发动机气门叠开角度更小，对正时可采用相同的凸轮轴固定工具。,Cylinder Heads,Head Casting and Machining & Sub Assembly Same as 4.4L NA Includes valve seats and guides, cam caps, gallery plugs (Avdel Plugs) NB: One extra Avdel plug is required per head to blank off VVT feed Valves, springs, collets Same as 4.4L NA Camshafts Different intake and exhaust cams. Duration and timing (less overlap for SC engine). Timing flats positioned appropriately so same service tools used for timing.,
