Übersetzung für "Geschlossene drosselklappe" in Englisch

The completely closed throttle valve covers 81% of the cross-sectional area of the intake duct.

One of these trigger conditions could be termed “idle”, conditions for the idle state arising if a certain engine speed is not reached, or the throttle valve is closed completely or almost completely, or if no gear has been selected or the clutch is disengaged.

The required magnetic flux is particularly great when a widely opened throttle plate is to be opened yet further at a high stator current, or when an almost closed throttle plate is to be closed yet further at a high stator current.

During the transition of the internal combustion engine into the coasting operation (closing of the throttle valve), for example, during a shifting operation, the exhaust gas turbocharger initially still continues to feed charging air against the closed throttle valve 20 so that a pressure shock occurs ahead of it.

This design allows for the fact that during constant supercharging, also with the throttle flap closed, such as during idling and particularly in cases of thrust at higher rotational speed of the engine the supercharger would feed fully against the closed throttle flap and build up corresponding pressure, comparable to a pump.

In this case the rotary element 9 is held fast via the arm 13 so that it cannot be moved further in clockwise direction into the closed position of the throttle valve 2.

Upstream of the throttle flap 12, the pressure P 1 increases in the exhaust gas duct 5, but this is not constant with respect to time but acts in a pulsating manner on the closed throttle flap 12 .

The connection between the pressure side and the intake side of the compressor via a bypass line is necessary for the transition from a high load to the thrust mode of the internal combustion engine, so as to prevent a high delivery of the pressure boost pump against a closed throttle flap and the resulting pumping effect, as well as to prevent an excessive sudden drop in the turbocharger speed entailing thermodynamic problems.

Due to the fact that the closed throttle flap forms an angle of >90° with the partition wall, flow losses may be kept very small.

This can be achieved by opening the previously closed throttle valve at least once by a specified absolute rotational angle value after the spark ignition and fuel supply have been switched off.

Of course, it may also be provided that either a fully closed throttle valve 5 or a fully open throttle valve 5 will come about as output variable of the characteristics curve, so that the same result is achieved as in the threshold value approach described above.

The connection between the pressure side and the intake side of a boost pressure pump of a turbocharger via a bypass line is required for a transition from high load to overrun conditions of the internal combustion engine in order to prevent a high delivery rate of the boost pressure pump against a closed throttle flap, and the resultant pumping effects as well as a sudden excessive decrease in the turbo-speed resulting in thermodynamics problems.

When a quick-closing throttle flap is used, the quick closing action being provoked by a sudden deceleration, for example, a pumping effect of the turbocharger, which continues to rotate, against the closed throttle flap 7 is prevented in a known manner by providing a bypass line 8 comprising an air control valve 9 .

In particular, for forming the value qlls, which represents the actual amount of airflow through the bypass setting device, in block 10 the airflow through the closed throttle flap (leak air) OLLDK is subtracted from the detected amount of airflow qsoll through the bypass.

This state corresponds to a mostly closed throttle valve of conventional engines.

In the start position a choke valve is completely closed and a throttle flap is partially closed.

Then, step 1020 follows, in which the throttle valve is closed.

With throttle closed the TPS should read less than 1.25 volts.

For higher engine speeds with the throttle flap almost closed, the internal combustion engine is in the overrun cutoff mode of operation.

The above-described melting procedure proper follows thereupon with the throttle valve 5 closed.

In the event of such a fault, the throttle valve is thus closed and can then no longer be further operated.

This means, for example, that the fuel injection is stopped and/or the throttle valve is closed.

On the downstream side of the throttle valve 2, a relief channel 16 having a relatively large cross sectional area connects exhaust pipe 1 with valve bore 8 in such a way that when the poppet 10 is in an advanced postion, the channel 16 is only partially closed off by the poppet 10, i.e., is partially open, and when the poppet is fully retracted, the channel 16 is also at least partially open, i.e., is only partially blocked by the poppet.

The closed and open-loop control apparatus according to claim 1, wherein during overrunning with the throttle flap closed and the motor speed above the idling motor speed, the control values provide a motor speed-dependent minimum air quantity through the opening degree of the idling fill level regulator, upon overrunning cutoff of the fuel in order to assure a combustible mixture by means of a negative pressure limitation effected thereby.

The constant operating condition results with the aid of this rotational speed and an additional signal of, for example, a switch arranged at the throttle valve of the internal combusiton engine which is actuated with a closed throttle valve.

In the coasting or idling operation of the engine, i.e. when the throttle valve is closed, the crankcase gases, by means of a pipe 16 connected to the heating element 13, behind the throttle valve, are introduced into a secondary ventilating point 17.

In this case, the advantage is achieved such that the throttling gap existing with a partially closed throttle flap promotes the thorough mixing of the injected fuel with the intake air through the high flow speeds existing at the gap, thus improving the mixing of fuel and air.

An idling control 3 is directly flanged to the throttle valve connector 1, an appropriate air sub-stream T being capable of being regulated via this idling control 3 for a closed throttle valve 2 when the internal combustion engine is idling.

Second sealing surfaces will then be needed to secure the elastomeric seal that seals off the flow between the throttle disk and the intake pipe when the disk is closed.

The higher value of this signal characterizes the status where the throttle valve is closed, which in the specialized case is one of the preconditions for overrunning.

In order to reduce the air leakage rate, means are provided for eddying the leakage air which, when the throttle valve is closed, passes between it and the wall of the bore of the connection-piece housing.

Thus, for example, a critical load may be encountered when, with the overrun cutoff mode enabled, the vehicle drives downhill with the engine still cold, that is, when the fuel supply is interrupted while the throttle valve is closed, and when the clutch is suddenly disengaged. As a result, the internal combustion engine is no longer driven by the rotational movement of the wheels through the transmission.

On account of the supercharging pressure control device of this invention, the unnecessary supercharging pressure upstream of the partially closed throttle valve and the exhaust pressure upstream of the exhaust gas turbine are reduced almost in the entire partial load range.

Thereby, the unnecessary supercharging pressure upstream of the partially closed throttle valve and the exhaust gas counterpressure upstream of the exhaust gas turbine are reduced almost in the entire partial load range.

In the operation of an internal combustion engine, it is known to interrupt the supply of fuel when the throttle valve is closed at higher and high engine speeds, that is, when the internal combustion engine is in the overrun mode of operation.

In addition, the AND element 22, via an input with a throttle valve switch 23 which, when the throttle valve 18 is shut, emits a signal and via a negating input, is connected with a position detector 24 which scans a position of a control element 10 (operating lever 11) in the range of the maximum value MAX (maximal heating) and, if necessary, emits a stop signal esu.

According to the present invention the reversal of direction of rotation is substantially accelerated due to the deceleration of the propeller shaft and the simultaneous closure of the throttle valve of the engine brake. The couplings of the three shaft birotatory reduction gear system are thus protected from wear, and a change in the direction of rotation of the combustion engine is definitely avoided.

In dependence upon pregiven operating parameters, for example engine speed and engine temperature, the fuel metering is cut out when the accelerator pedal is released or the throttle flap is closed.

In the decompression method according to FIG. 6a, a far lower underpressure however arises in the cylinder than in the usual operation with a closed throttle flap. Therefore, possibly occurring problems because of the vaporization of the engine oil or because of the unusual loading of the piston rings should be noted.