Translation of "Manifold injection" in German

Modern gasoline engines having intake manifold injection usually have an electronic throttle valve for regulating the air flow.

In the case of manifold injection, the quantity of fuel to be injected into the intake manifold may also be used.

In internal combustion engines with intake manifold injection, the fuel is injected upstream of the two intake valves.

By analogy, this is true also for an internal combustion engine having manifold injection.

This applies analogously also to an internal combustion engine having manifold injection.

These known disadvantages can be avoided when a manifold injection is used for the mixture formation instead of a carburetor.

In the intake manifold 20, an injection nozzle 24 is provided which is connected to a fuel system 26 .

Examples of this include operating states where manifold injection is accompanied by retarded ignition timing for catalytic converter heating during warm-up.

The boost air is guided through a recess in intercooler 5 upstream of an air distributor or injection manifold 19 in the vicinity of the underside 18 of the intercooler 5 and from there conducted uniformly upwardly through the cooling area of the intercooler 5 for cooling.

The unit 9 also includes the air injection manifold 19 located on the intake side of the intercooler 5 on the bottom and the intake plenum 6 on the outlet side on top.

A boost air line 17 is fed through the recess 16, through which the boost air compressed in the supercharger 4 is conducted vertically downward into the air injection manifold 19 of the intercooler 5 .

From the air injection manifold 19, the boost air flows upward through the intercooler 5, is cooled in the intercooler 5, and ends up in the intake plenum 6 on top of the intercooler 5 .

The fuel-metering means 6 can be configured for a so-called intake manifold injection as well as for a direct gasoline injection into the combustion chambers of the individual cylinders.

Fuel injector 12 protrudes with its injection-side end into a mounting hole 16 of a cylinder head 17 (direct injection) or of a mounting connection piece 17 formed on an intake manifold (intake manifold injection).

STATE OF THE ART FIELD OF THE INVENTION The invention relates to a method for operating an internal combustion engine, especially of an internal combustion engine having direct injection (DE) or intake manifold injection (SRE) and having a control apparatus.

Expediently the individual main manifolds are constructed in such a way that their lateral through-holes are connected via a runner to the centre of the respective main manifold, from where further runners lead to the injection nozzles or orifices in such a way that the flow path from the centre of the main manifold to all injection nozzles or orifices is essentially of equal length.

Corresponding hot runner manifold systems and injection moulds have long been known in the state of the art, and corresponding injection moulds are known in particular as moulds for the production of blanks of PET bottles, i.e. of preforms, which consist of PET tubes that are initially relatively thick-walled, and can have very varied shapes, have a relatively small volume and are moulded identically in every respect.

The present invention relates in particular to the said hot runner manifold systems for injection moulds for the production of PET blanks, but it can also be applied directly for hot runner manifold systems for other injection moulds, especially if these are intended for the production of a large number of identical parts in one mould or alternatively are designed for the production of very large moulds with a multiplicity of injection nozzles or orifices.