Abstract: A first method is for determining a variable, which characterizes a fuel injection, in an internal combustion engine of a motor vehicle in a hot-start situation wherein fuel is injected directly into at least one combustion chamber from a high-pressure region of a fuel supply system; the variable, which characterizes the injection quantity, is corrected at least in dependence upon a variable which represents a temperature of the fuel. A second method is for determining a hot-start situation in an internal combustion engine of a motor vehicle wherein a hot-start situation is determined at least based on a variable, which represents a temperature of the fuel, and based on a fuel pressure. The invention relates likewise to corresponding arrangements, a corresponding control apparatus for an internal combustion engine, a corresponding computer program having program-code means and a corresponding computer program product having program-code means.

Abstract: A method for detecting a hot start situation in an internal combustion of a motor vehicle includes the steps of determining a gradient of a temperature variation of an engine temperature; and detecting a hot start situation based on the determined gradient of a temperature variation of an engine temperature. An appropriate electronic control unit for an internal combustion engine is provided, as well as an appropriate computer program with a program code mechanism, and an appropriate computer program product with a program code mechanism.

Abstract: A method and a control unit are proposed for checking the performance reliability of a timer that is arranged outside of the control unit, used in particular for controlling an internal combustion engine, and that supplies time information to the control unit, further time information being generated internally in the control unit and being compared to corresponding time information supplied by the external timer. Because an internal time meter is started in the control unit and the comparison of the time information supplied by the external timer and by the internal time meter is carried out at arbitrarily specifiable points of time, a malfunction of the external timer can be determined during the entire operating time, and furthermore, a deviation can be calculated with higher accuracy.

Abstract: An internal combustion engine, especially of a motor vehicle, is described wherein fuel can be injected into an intake manifold or into a combustion chamber during warm up. A control apparatus is provided for determining a warm-up factor (fWL) for increasing the injected fuel quantity below an operating temperature of the engine. With the control apparatus, the warm-up factor (fWL) is determined from a base factor (fG) and a load-dependent factor (fLA).

Abstract: A method is provided for operating a spark ignition internal combustion engine having fuel injection at a cold start. The method retards the spark angle to a cold start value at least for the first combustion in at least one cylinder of the internal combustion engine during a cold start phase, the fuel injected into the cylinder being brought to combustion, and the method sets the spark angle to normal, to end the cold start phase.

Abstract: A first method for determining a variable, which characterizes a fuel injection, in an internal combustion engine of a motor vehicle in a hot-start situation wherein fuel is injected directly into at least one combustion chamber from a high-pressure region of a fuel supply system; the variable, which characterizes the injection quantity, is corrected at least in dependence upon a variable, which represents a temperature of the fuel. A second method is for determining a hot-start situation in an internal combustion engine of a motor vehicle wherein a hot-start situation is determined at least based on a variable, which represents a temperature of the fuel, and based on a fuel pressure. The invention relates likewise to corresponding arrangements, a corresponding control apparatus for an internal combustion engine, a corresponding computer program having program-code means and a corresponding computer program product having program-code means.

Abstract: The invention concerns a method for detecting a hot start situation in an internal combustion engine of a motor vehicle. The invention also concerns an appropriate electronic control unit for an internal combustion engine, an appropriate computer program with program code means, and an appropriate computer program product with program code means.

Abstract: Fuel is injected directly into at least one combustion chamber (12) in a method for operating an internal combustion engine (10), especially for a motor vehicle. Furthermore, air is supplied to the combustion chamber (12) via an intake manifold (14). Injection and supply take place at least from time to time so that the mixture of fuel and air in the combustion chamber (12) is stratified. Furthermore, a temperature (tmot) is determined which is specific for the internal combustion engine (10). The pressure (pss) in the intake manifold (14) is changed in dependence upon the determined temperature (tmot) in order to guarantee an optimal operating performance of the internal combustion engine (10) in all operating ranges of the engine (10).

Abstract: The invention is directed to a method of starting an engine for internal combustion engines of a motor vehicle driven by gasoline direct injection with the engines being subdivided into several cylinder banks and a high pressure injection system being provided for each cylinder bank. During a first phase (A), an injection into the cylinders of a first cylinder bank in correspondence to their normal ignition sequence takes place and no injection is carried out in the cylinders of the remaining cylinder banks. In a subsequent second phase (B), injection takes place also into the cylinders of the other cylinder bank or banks.

Abstract: A method is provided for operating a spark ignition internal combustion engine having fuel injection at a cold start. The method retards the spark angle to a cold start value at least for the first combustion in at least one cylinder of the internal combustion engine during a cold start phase, the fuel injected into the cylinder being brought to combustion, and the method sets the spark angle to normal, to end the cold start phase.

Abstract: An internal combustion engine, especially of a motor vehicle, is described wherein fuel can be injected into an intake manifold or into a combustion chamber during warm up. A control apparatus is provided for determining a warm-up factor (fWL) for increasing the injected fuel quantity below an operating temperature of the engine. With the control apparatus, the warm-up factor (fWL) is determined from a base factor (fG) and a load-dependent factor (fLA).

Abstract: An internal combustion engine (1), especially for a motor vehicle, is described, which has a combustion chamber (4) into which fuel can be injected in at least two operating modes. Each of the injections has an injection start angle and an injection duration. Furthermore, a control apparatus 18 is provided for control (open loop and/or closed loop). An injection end angle can be determined by the control apparatus (18) from the injection start angle and the injection duration. Likewise, a check can be made by the control apparatus (18) as to whether an injection interrupt angle is exceeded by the injection end angle.

Abstract: A drive configuration for stair lifts is described. The drive configuration has a load-bearing configuration which is mounted displaceably on a first (bottom) guide rail and a second (top) guide rail. A drive unit interacts with a drive rail. The drive rail is formed by a perforated bar which has engagement openings spaced apart at regular intervals in the longitudinal direction and also has two uninterrupted, mutually opposite running surfaces. The drive unit has two gearwheel-shaped drive wheels which are disposed opposite one another, and accommodate the perforated bar with a radial contact-pressure force between them. The drive wheels have drive surfaces which are uninterrupted in the circumferential direction and radially projecting drive protrusions, the drive protrusions interacting with the engagement openings in a form-fitting drive connection and the drive surfaces interacting with the running surfaces in a force-fitting drive connection.

Abstract: A fuel supply system for an internal combustion engine in a motor vehicle in particular is provided with a control unit for determining a quantity of fuel to be supplied to a cylinder. An injection valve is provided for injecting the quantity of fuel to be supplied. The control unit determines whether combustion has taken place in the cylinder. The quantity of fuel supplied to the cylinder where no combustion has taken place is determined by the control unit.

Abstract: A method and a control unit are proposed for checking the performance reliability of a timer that is arranged outside of the control unit, used in particular for controlling an internal combustion engine, and that supplies time information to the control unit, further time information being generated internally in the control unit and being compared to corresponding time information supplied by the external timer. Because an internal time meter is started in the control unit and the comparison of the time information supplied by the external timer and by the internal time meter is carried out at arbitrarily specifiable points of time, a malfunction of the external timer can be determined during the entire operating time, and furthermore, a deviation can be calculated with higher accuracy.

Abstract: A stairlift has a vertically displaceable load-receiving device on which a platform, hinged ramps and barriers are disposed, vertically movable barrier-actuating bars, which protrude downward over the load-receiving device and individually link the barriers, a spring-loaded pretensioning device for the platform, which forces the platform upward, a tilt lever on the platform, which interacts with a tilt stop of the guide body and swings the platform up and down in the unloaded state, and two lifting bars linked to the platform, for interaction with rotating stops of the barriers in order to move the barriers out of the lowermost into the horizontal position as the unloaded load-receiving device is lowered.

Abstract: A drive configuration for stair lifts is described. The drive configuration has a load-bearing configuration which is mounted displaceably on a first (bottom) guide rail and a second (top) guide rail. A drive unit interacts with a drive rail. The drive rail is formed by a perforated bar which has engagement openings spaced apart at regular intervals in the longitudinal direction and also has two uninterrupted, mutually opposite running surfaces. The drive unit has two gearwheel-shaped drive wheels which are disposed opposite one another, and accommodate the perforated bar with a radial contact-pressure force between them. The drive wheels have drive surfaces which are uninterrupted in the circumferential direction and radially projecting drive protrusions, the drive protrusions interacting with the engagement openings in a form-fitting drive connection and the drive surfaces interacting with the running surfaces in a force-fitting drive connection.

Abstract: A fuel supply system for an internal combustion engine, particularly of a motor vehicle, includes a control unit for determining a fuel quantity to be injected, the fuel quantity to be injected being initially increased during a start of the internal combustion engine and then being reduced again. The fuel supply system also includes a fuel injector for injecting the fuel quantity to be injected into a combustion chamber. It is checked by the control unit whether a combustion has taken place in the cylinder, and, if no combustion has taken place, the fuel quantity to be injected is not reduced, or is not reduced to the same extent as when a combustion has taken place.

Abstract: A drive assembly for a freight elevator or a stair climber for the handicapped is guided on at least one supporting waling or spar. A driving strip is disposed on the supporting waling or spar. According to one embodiment, the driving strip has recesses formed therein at equal intervals. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the recesses for form-lockingly engaging the drive wheel with the recesses. According to another embodiment, squared blocks of constant length are secured to the supporting waling or spar at equal spacings. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the spacings of the blocks for form-lockingly engaging the squared blocks with the drive wheel.

Abstract: A staircase lift includes upper and lower support girders fixedly disposed along stairs, vertical rods disposed between the support girders, inclined support rods fixed on the vertical rods, a load receiver in the form of a platform or a seat with a back panel, the load receiver being movably supporting on the upper and lower support girders, a flat drive housing disposed on the back panel of the load receiver, and a motor-driven drive disposed in the drive housing, the drive including bolts having ends supported in endless grooves formed in the drive housing, a closed endless circle of guide sleeves supported on the bolts, a pair of gear wheels driving the bolts, and a plurality of support rollers equidistantly disposed in the circle of guide sleeves, extending from the drive housing and cooperating with the bolts.