Diesel engine - details of the 0.8 TDI

The hybrid module has been integrated into the housing of the 7-speed DSG (Direct Shift Gearbox). An electronic power control module, operating at around. It is located between the TDI engine and the DSG gearbox and consists of a 10 kW / 14 PS electric motor and a clutch. The E-motor is supplied with energy from a lithium-ion battery located at the front of the car. 130 Volts manages the flow of high voltage energy the battery and to the E-motor. In parallel, the vehicle's low voltage electrical system is supplied with the necessary 12 Volts through a DC/DC converter.

In braking phases, the E-motor operates as a generator to charge the lithium-ion battery by recovering braking energy. The engine controller regulates all energy flow and drive management tasks taking into account the moment by moment demands for power made by the driver. The gears of the automatically shifting DSG are always selected with the aim of achieving the best possible fuel economy. Some of the parameters used to calculate the optimum propulsion mode for the given conditions are: accelerator pedal position, engine load, momentary fuel demand, energy supply and the mix of kinetic and electrical energy at any given time.

Electric motor - details of the E-motor

Based on their common origins, the 0.8 TDI and 1.6 TDI have identical cylinder spacing (88 millimetres), bore (79.5 millimetres) and stroke (80.5 millimetres). These high-tech TDI engines also share key internal engine features for reducing emissions. On both drivetrains there is exhaust gas recirculation, an oxidation catalytic converter and a diesel particulate filter. They include special piston crowns, multi-injection and individual orientations of the specific injection jets. Equipped this way, the TDIs in each Volkswagen fulfil the limits of the Euro-5 emissions standard with ease.

In normal operation the electric motor can support the TDI engine in conditions such as by electronic load point shifting and in acceleration. In this case, an auxiliary clutch decouples the TDI from the drivetrain. Moreover, the E-motor can propel the Volkswagen L1 over short distances by itself. Restarting the TDI is a very easy process. In so-called "pulse starting" of the TDI, the electric motor is sped up and is then coupled to the TDI unit to provide almost instant starting. If necessary - generally during acceleration - the E-motor can supply 40 percent additional torque over the entire speed engine speed range. The entire process takes place automatically and without jolts, so the driver hardly notices the restarting of the TDI engine.

The TDI engine in the Volkswagen L1 Concept is a new development. Hence, this 0.8 litre TDI unit has been derived from the 1.6 TDI just introduced a few months ago. Yet, even here Volkswagen has been able to exploit synergies to design an engine that is both innovative and cost-effective. The 1.6 TDI is making its debut at the IAA in cars such as the new version of the Golf BlueMotion (3.8 l/100 km) and the Passat BlueMotion (4.4 l/100 km) - which are currently the world's most fuel-efficient production cars in their respective classes.

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Big picture: October 1, 2009

October 1, 2009

Close-up of bathroom radiator


365.275:2009 (#458) - stripy

after much discussion about wearing skirts during the winter and staying warm with my twitter buddies (thanks laura!) i think that i'm going to give it a try! need more cute stripy socks though.


Liquid Cooling

EK Supreme LT
Laing DDC + OC Labs
Cape Corp AGB2
NexXxoS Pro II Radiator + Magicool 120mm Radiator
Alphacool NexXxoS NBXS-A
Alphacool NexXxoS GP-N9800 ( Moded to fit on GTS 260)


Scirocco

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