Translation of "Engine knock" in German

However, the signals of a phase detector and a speed sensor are also significant for controlling engine knock.

Collect the coins and sheep farm engine knock, skip over them.

Knock regulation becomes less sensitive (engine knock is not detected) and the risk of engine damage increases.

The resulting tendency of the engine to knock must be compensated by increasing the octane number of the fuel.

A particular highlight of the engine control unit is ionic current technology serving to detect any tendency of the engine to knock, misfire and suffer miscombustion.

With lower MON fuels fuel consumption is increased and engine knock may occur with long term operation on such a fuel, possibly leading to engine damage.

The knocking limit, that is, the limit of engine operation before the engine will knock, can be additionally controlled by also controlling the ignition timing in dependence on one or more temperatures, as sensed.

Since this knock boundary intersects the ignition shift characteristic 40, in the illustrated case an engine knock will occur between the speeds of 2300 and 2800 r.p.m.

The goal of the invention is to improve a device for generating a synthetic signal in such fashion that the synthetic signal is as realistic as possible in comparison to the knock sensor signal that usually appears in engines, and all the functions associated with knock control can be tested without limit in the laboratory, in other words without having an actual engine with a knock sensor and ignition angle retardation.

The starting point for knock regulation of a multicylinder internal combustion engine is a knock threshold KS for each individual cylinder (which is smaller than or equal to a specified maximum knock threshold KS max applicable to all of the cylinders), which is generally formed by knock sensor signals or by knock values KW determined for that cylinder from those knock signals (which is referred to below as knock values) and with which these knock values are compared.

One method for controlling the amplification factor for the sensor signal of an engine knock control is known from German Published, Non-Prosecuted Application DE 34 34 823 A1.

These oscillations are detected by knock sensors (structure-borne noise sensors) and taken into account in controlling the gasoline engine by knock control in order to prevent engine damage.

The evaluation unit amplifies the signals and integrates the signals in a suitable manner so that after an analog/digital conversion of the signals, the integrated value U INT,current may be compared with a threshold in a microprocessor contained in the internal combustion engine, a knock is detected if the threshold is exceeded.

If a knock has been detected, then the microprocessor integrated in the internal combustion engine performs the knock control to the effect that an adjustment angle is added to a fundamental ignition angle, the total forming the base ignition angle.

If the exhaust gas recirculation rate decreases or the engine temperature rises, knock limit control 4 causes a global retardation of base ignition angle 1 for each knocking instance detected.

When the exhaust gas recirculation rate increases, or when the engine temperature decreases, knock limit control 4 causes a global advance of base ignition angle 1 as long as knock control 3 has detected knocking.

In an internal combustion engine, the spontaneous ignition of the fresh mixture not yet reached by the flame front can result in the occurrence of abnormal combustion processes, which are referred to as engine knock.

Due to the increased thermal stress and the pressure waves that occur, persistent engine knock can result in damage to the component parts of the combustion chamber.