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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

Multi Point Injection


The multi-position injection supplies every cylinder with the same mixture. Because the fuel is injected only at the end of the inlet manifold, there is no fuel condensation on the inlet manifold walls.

How it works

The injector per cylinder is arranged in each case shortly before the intake valve (inlet manifold injection). Via a distributor pipe these injectors are supplied with fuel, going through a pump and a filter first. The pressure control valve at the end of the distributor pipe makes excess fuel flow back to the tank. It is connected through the spring chamber with the inlet manifold of the engine and regulates according to the inlet manifold pressure 2 - 3 bar injection pressure. The pressure difference between distributor pipe and inlet manifold remains constant, in spite of different pressures in the inlet manifold. The injection amount is dependent exclusively on the injection pulse timing.Provided that it does not concern a sequential injection, all injectors inject together or in case of more than four cylinders in 2 groups.


Inductive pickup (position of the crankshaft, engine speed), mass air flow meters (figure), temperature sensor (coolant), throttle switch.


Injectors, stroke valve for fuel return, relay (fuel pump), idle running-filling regulator.               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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