1.2 R3 PD TDI 3L
This inline three-cylinder Turbocharged Direct Injection (TDI) diesel engine is the powerplant of the Volkswagen Lupo 3L and Audi A2 3L, with a low fuel consumption of only 2.99 litres per 100 kilometres (94.5 mpg; 78.7 mpg) - hence the "3L" tag. It is based on the 1.4 TDI version, but the cylinder block is made of aluminium alloy, and some of the other components are lighter.
- identification
- class: EA188, parts code prefix: ???, ID codes: ANY, AYZ
- engine configuration & engine displacement
- inline three-cylinder (R3/I3) Turbocharged Direct Injection (TDI) turbodiesel; 1,191 cubic centimetres (72.7 cu in), bore x stroke: 76.5 by 86.4 millimetres (3.01 in × 3.40 in), stroke ratio: 0.89:1 - undersquare/long-stroke, 397.1 cc per cylinder, compression ratio: 19.5:1
- cylinder block & crankcase
- cast aluminium alloy (saving 16 kilograms (35 lb)); simplex-chain-driven balance shaft and oil pump, four main bearings
- piston and piston rods
- Alcan aluminium pistons, trapezoid bearings shared with rods
- cylinder head & valvetrain
- cast aluminium alloy; two valves per cylinder, 6 valves in total, each with two concentric valve springs, belt-driven single overhead camshaft (SOHC)
- aspiration
- Garrett GT1541V turbocharger, side-mounted intercooler (upright),
water cooled exhaust gas recirculation (EGR) system integrated in heating cooling circuit (not in 1.4 TDI) - cooling system
- increased engine coolant temperature of 90 °C (194 °F) (in 1.4 TDI: 85 °C (185 °F)), oil cooler integrated in engine cooling circuit (heating cooling circuit in 1.4 TDI)
- fuel system
- camshaft-actuated Pumpe Düse (PD) direct injection Unit Injectors, injection pressure up to 2,050 bars (29,733 psi) (approx. 180 bars (2,611 psi) pre-injection, min. 300 bars (4,351 psi) main-injection), increased recirculated fuel temperature from underfloor cooler of 60 °C (140 °F) (in 1.4 TDI: 30 °C (86 °F))
- engine management
- Bosch EDC 15P (variant spelling: EDC 15+) electronic engine control unit (ECU) (some few old ones EDC 15 only)
- exhaust system
- lightweight construction: reduced wall thickness and steel sheet exhaust manifold (instead of cast-iron),
one near-engine-mounted catalytic pre-converter, one main catalytic converter and an end muffler
(instead of one underfloor catalytic converter, one underfloor muffler and an end muffler attached to 1.4 TDI) - starter
- strengthend Bosch starter motor (12V, 150A, 1800W with 9 tooth pinion) for stopp-start system with quick-start-function and voltage stabiliser for airbag-system, radio and instrument cluster
- dimensions
- 100 kilograms (220 lb)
- DIN-rated motive power & torque output
- SPORT mode:
45 kilowatts (61 PS; 60 bhp) @ 4,000 rpm; 140 newton metres (103 lbf·ft) @ 1,800-2,400 rpm, 80% available from 1,300 rpm
ECO mode:
33 kilowatts (45 PS; 44 bhp) @ 3,000 rpm; 120 newton metres (89 lbf·ft) @ 1,600-2,400 rpm, "redline" is 3,000 rpm (instead of 4,800 rpm) - idling speed
- reduced while the car freewheels (above 13 kilometres per hour (8 mph)) to 770 rpm (otherwise 850 rpm)
- mean effective pressure
- 14.8 bars (215 psi) (in SPORT mode)
- mean efficiency in driving cycle
- slightly over 30%
- applications
- Audi A2 3L (ANY:- A2: 03/01-08/05), Volkswagen Lupo 3L (ANY: 06/99-11/00, AYZ: 11/00-07/05)
- references
Read more about this topic: List Of Discontinued Volkswagen Group Diesel Engines, Three-cylinder Diesels