Self-Study Programme 248 The W Engine Concept - VolksPage.Net

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60 Test your knowledge 9. The adjustment ranges of the camshaft adjuster between the inlet camshaft and the exhaust camshaft are different. The exhaust camshaft of the W8 engine can a. be adjusted continuously! b. only be adjusted to the advance or retard position! 10. The following units are driven by the pulley drive: a. the coolant pump b. the alternator c. the fuel pump d. the power-steering pump e. the air-conditioning compressor 11. Which of the following statements is true? a. the W8 engine has a wet-sump lubrication system. b. the W12 engine for VW models has a dry-sump lubrication system. c. the W12 engine for VW models has a wet-sump lubrication system. 12. Characteristic maps which allow the desired engine temperature to be reached in accor dance with theengine's operating requirements are stored in the engine control unit. Which of the following statements is applicable? a. There is only one temperature sensor in the cooling circuit, and it is located at the radiator outlet. b. There are two temperature sensors in the cooling circuit. c. there is only one temperature sensor in the cooling circuit, and it is located at the engine block outlet.
13. Which of the following statements is true? a. The coolant flows through the cylinder heads from the exhaust end to the intake end. This ensures very good temperature equalisation as well as effective cooling of the outlet webs and spark plugs. b. Coolant flows through the cylinder heads from the intake side to the exhaust side. This ensures very good temperature equalisation as well as effective cooling of the outlet webs andspark plugs. 14. A new liquid sealing method is used to seal the upper timing case cover. The liquid gasket is injected through screw nipples. a. The screw nipples have to be replaced when repairing the gasket. b. The screw nipple can be reused any number of times. c. The screw nipples must be unscrewed after repairing the gasket. 61
Page 1 and 2:
Service. Self-Study Programme 248 T
Page 3 and 4:
At a glance Introduction . . . . .
Page 5 and 6:
The W principle To illustrate the p
Page 7 and 8:
The modular design principle of the
Page 9 and 10: Comparing the 12-cylinder crankshaf
Page 11 and 12: S248_018 Engine code BDN Dimensions
Page 13 and 14: S248_020 [Nm] 800 700 600 500 400 3
Page 15 and 16: The engine in detail To familiarise
Page 17 and 18: The crankcase lower section The cra
Page 19 and 20: Conrods and pistons S248_016 Trapez
Page 21 and 22: There is a groove at the gear wheel
Page 23 and 24: Two-mass flywheel S248_061 A spring
Page 25 and 26: The 4 valves in each cylinder are a
Page 27 and 28: The secondary air ducting system Be
Page 29 and 30: The camshaft timing control Like th
Page 31 and 32: Retard adjustment The solenoid valv
Page 33 and 34: In the W12 engine, the hydraulic be
Page 35 and 36: Schematic diagram of the oil circui
Page 37 and 38: The oil circuit based on the dry-su
Page 39 and 40: The oil pump is mounted from below
Page 41 and 42: Lubrication of the conrod bearings
Page 43 and 44: Coolant circuit of W12 engine Right
Page 45 and 46: Coolant pump with pump gear S248_11
Page 47 and 48: W12 engine Intake manifold upper se
Page 49 and 50: W12 engine Diaphragm valve, right O
Page 51 and 52: Tailpipes Rear silencer Exhaust sys
Page 53 and 54: Liquid gaskets Application of the l
Page 55 and 56: Place the copper coloured chain lin
Page 57 and 58: Notes 57
Page 59: 5. Why does the W8 engine have a ba
Page 63 and 64: 14.) a 13.) a 12.) b 11.) a, c 10.)
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Self-Study Programme 248 The W Engine Concept - VolksPage.Net

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