Verfahren zum Betrieben eines Kraftfahrzeuges auf einem Rollenpruefstand

Operating method involves traversing of predetermined driving cycles of motor vehicle with definite switching points on chassis dynamo meter. An external control unit (6) is attached on motor control unit (2). By using the external control unit, the control of fresh air and/or fresh charge of air-fuel mixture attachment (3) as well as the control of drive (4), are influenced.

Verbesserung der Wiederholbarkeit bei Verbrauchmessunger durch Normierung

The method involves recording input variables such as accelerator position, as fuel consumption during a test, and forming a neural network with the recorded variables, where the network specifies an output variable such as fuel consumption, after a training phase. The output variable is simulated by the network trained at a real vehicle using a standardized target curve and/or a speed curve. The simulated output variable corresponds to the real vehicle such that the vehicle accurately follows the target curve.

Abgaswärme-Rückgewinnung

Die Erfindung betrifft einen Verbrennungsmotor (1) mit zumindest einer Abgasleitung (2), in der ein Wärmetauscher (4) angeordnet ist, und mit einer dem Wärmetauscher (4) umführenden Bypaßleitung (13). Der Verbrennungsmotor (1) weist einen Motorölkreislauf (6) auf. Dem Wärmetauscher (4) ist zumindest stromaufwärts eines Abgasstromes ein Mehrwegeventil (12) vorgeschaltet. Der Wärmetauscher (4) ist in dem Motorölkreislauf (6) integriert, so daß das Motoröl in einer Warmlaufphase des Verbrennungsmotors (1) mittels der Abgaswärme aufgeheizt wird.
Combustion engine comprises an exhaust gas line (2) containing a heat exchanger (4) connected to a multiple way valve (12) upstream of an exhaust gas stream. The heat exchanger is integrated into an engine oil cycle (13) so that the oil is heated in a hot running phase of the engine using the exhaust gas heat. Preferred Features: The multiple way valve is formed as a three-way valve connected with two connections to the exhaust gas line and with one connection to a bypass. A siphon (14) is connected to the heat exchanger.

Mehrzylinder-Brennkraftmaschine und Verfahren zur Zylinderabschaltung

Multiple cylinder internal combustion engine (1) comprises a first lambda probe (11) and a first catalyst (12) arranged in a first exhaust gas pipe (8), a second lambda probe (13) and a second catalyst arranged in a second exhaust gas pipe (9), and a common controlled throttle valve (6) arranged in the inlet region (4) of the cylinders (A-D). Both exhaust gas pipes open into a complete exhaust gas pipe (10). - An INDEPENDENT CLAIM is also included for a process for partially switching off the multiple cylinder internal combustion engine. Preferred Features: A third catalyst is arranged in the complete exhaust gas pipe or in the second exhaust gas pipe behind the second lambda probe. The controlled throttle valve is an electronically controlled throttle valve.

Verfahren zur Entdrosselung einer Brennkraftmaschine und entdrosselte Brennkraftmaschine

Air for the internal combustion engine (1) passes through a turbocharger (2,3) compressor (4). The air line (7) downstream of the compressor divides with some air bypassing (9) the intercooler (6) and passing through a control valve (10). There is a sensor (14) downstream of the point where the bypass joins the main air line. - Air is bled off downstream of the sensor to a control module (11). This may return air to the control valve or pass it to the waste gate (13) for the turbine (5). Some of the exhaust gas (8) passes through the turbine and some of it bypasses it (12) through the waste gate.

Verfahren zur Herstellung eines Verbrennungsmotors

The method involves having a cylinder liner surrounded by a cooling agent channel where exterior to it an isolation layer is assigned. The isolation layer is within the inner walls of the cooling agent channel so that its exteriors are brought in. The isolation layer is formed with the cooling agent channel as a one piece so that the isolation layer is connected positively with the inner wall of the cooling agent channel. The isolation layer is manufactured at the same time with the cooling agent. The cooling agent channel is directly cast.

Verfahren zur Ermittlung der Stellung eines Zylinders einer Brennkraftmaschine

The cylinder setting reporting process involves varying the ignition angle and/or the injection angle about a preset angle, so that the machine can be operated in at least two different operating points with different ignition and/or injection angles, using at least one signal to report the reference cylinder setting in at least two points to determine the ignition point and the injection point of this reference cylinder.

Kurbelwellenmechanismus

A connecting rod bearing (1) has a guide (2) with enclosing surfaces (3,4,6,7) that retain a crankshaft funnel (4) such that the crankshaft funnel is movable back and forth along the guide as the funnel rotates. The crankshaft funnel is enclosed by a holder (18) that is further enclosed by a bush (19). The bush rotates with the funnel.

Flexibler Pleuel

The engine has a piston rod (1), which is connectable with a crank shaft at a piston rod head (2), and connectable with a piston at a piston rod lug (3) opposite to the head. Supporting carriers (6, 7) are attached to the head and the lug. The carriers extend axially along a centre axis (X) to each other, and variably spaced with their strikings (8, 9) to each other, so that a gap (11) is formed, which is bridged by a force storage unit (12).

Rheologische Steuerung einer Motorkühlung

The engine is cooled by a rheological fluid which in its passive state has a lower thermal conductivity value than in its activated state. The rheological fluid in its passive state has a thermal conductivity value of about a third with regard to the thermal conductivity value of water, and in its active state has a value of somewhat more than three times the thermal conductivity value of water. The rheological fluid has a base substance of silicone oil and a thermal conductivity value range of 0.2 to 1.88 watts per metre kelvin.

Verfahren zur Entlüftung eines Kurbelgehäuses einer Brennkraftmaschine und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens

The method involves performing load control of an internal combustion engine by a throttle valve provided in a suction line. An exhaust line is provided at a crankcase and is connected with the suction line. An electronically controllable valve (115) is arranged in the exhaust line to control the exhaust flow of the internal combustion engine depending on the operating condition of the internal combustion engine. An independent claim is also included for an internal combustion engine for the execution of a crankcase ventilating method.

Drehschieberventil fuer ein Kraftfahrzeug

The valve has a sealing unit arranged proximate to a rotary body. The sealing unit is arranged with a flexible sealing lip (6) in such a manner that the lip in a closed position of the valve is brought into a position resting against the body by pressurization of a combustion chamber. The sealing unit is provided with an under cut (8), where section of the under cut regions lying near the chamber forms the lip. An independent claim is also included for a method for intake and/or exhaust of gases in an internal combustion engine.

Abgasnachbehandlungssystem mit optimierter Abgasanstroemung

The system has a cylinder with an entry area (3) for supplying exhaust gases and a housing covering a main channel (5) such that a chamber is formed between the housing and the main channel. An additional channel (8) runs transverse to flow direction and tangential to the main channel, so that the gases supplied by the additional channel flows via the main channel in a spiral form to mix with the gases supplied by the main channel.