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Video Petrol Injection 1
Video Petrol Injection 2
Video Petrol Injection 3
Video Petrol Injection 4
Video Petrol Injection 5
Video B-Dir. Combustion
Video Dir. Petrol Injection 1
Video Dir. Petrol Injection 2
Video Dir. Petrol Injection 3
Video Dir. Petrol Injection 4
Video Dir. Petrol Injection 5
Video Petrol Injection Kugelf.
Video Homog. Working
Video Stratified-charge Oper.
Video Fuel Distrib.
Video Induction System
Video Petrol Injection Signal 1
Video Petrol Injection Signal 2
Video Idle Speed Device
Video Mass Air Flow Sensor 1
Video Mass Air Flow Sensor 2
Video Mass Air Flow Sensor 3
Video System Press. Reg. 1
Video System Press. Reg. 2
Video Injection Valve
Video Ind. Pulse Generator
Video Single Point Injection 1
Video Single Point Injection 2
Video Single Point Injection 3
Video Single Point Injection 4
Video Unregistrated Air
Video Lambda Sensor 1
Video Lambda Sensor 2
Video Lambda Sensor 3
Video Lambda Sensor 4
Video Lambda Sensor 5
Video Thermo Time Switch
Video Side-channel Pump
Video Peripheral Pump

Video First Fuel Pump
Video Petrol Injection Pump
Video D-Jetronic (MPI)
Video K-jetronic
Video KE-jetronic
Video KE-Jetroncic - Test, Diagn.
Video L-jetronic
Video LE-jetronic
Video LE-motronic
Video LH-jetronic
Video Vol. Air Flow Sensor
Video Idle Speed Device
Video Aux. Air Valve
Video Thermo Time Switch
Video Roller Vane Pump

Video Petrol injection 1
Video Petrol injection 2

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Direct Petrol Injection with
    Turbo Charging


Petrol direct fuel injections have in general the advantage that all fuel evaporates in the cylinder space. Therefore, the internal cooling is stronger, it can be operated, in principle, with a higher compression. It is proven by one of the first direct fuel injections with turbo-supercharging. The compression of 10,5 : 1 is relatively high, for a charged engine.

How it works

The combination is already known from racing. It is first implemented into a car: the Audi A3 with a four cylinder in-line engine. The car features two offset shafts and an infinitely adjustable intake camshaft. The injection pressure is 110 bar. Looking at the company philosophy as well as the fact that it remains a sporty vehicle, a stratified charge operation is not considered for saving fuel. The engine is operated homogeneously with conventional exhaust gas system.

This vehicle allows a comparison to the charged diesel direct fuel injections. There are certain approaches in terms of torque (slight advantages for the diesel engine) and in terms of the nominal rotation speed (clear advantages for the petrol car). Even the mileage is well enough, in spite of the abandonment of further reaching fuel measures, however, the mileage will be much worse once the engine performance is used.


EngineIn-line four-cylinder
Displacement2,0 liter
Bore/stroke82,5/92,8 mm
Average piston rate
at rated speed
15,8 m/s
Compression ratio10,5 : 1
Maximum boost pressure0,7 bar
Performance147 kW (200 HP)
at 5100 rpm
Torque280 Nm
at 1800 rpm
Kerb weight1410 kg
Permitted total weight1970 kg
0 - 100 km/h7,0 s
Top speed236 km/h
Combined cycle7,7 l/100 km               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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