Abstract: A method for controlling an emergency unit of an internal combustion engine including the following steps: inputting a threshold value for an overspeed of the engine; detecting a second rotational speed of the engine with a second rotational speed sensor; checking the plausibility of the second rotational speed. The plausibility checking includes the following steps: inputting a first rotational speed detected by a first rotational speed sensor of an engine control unit; calculating a difference between the second rotational speed and the first rotational speed; comparing the difference with a recorded threshold value for the difference; in the event that the difference is smaller than the threshold value for the difference, emitting a plausibility signal. After receipt of the plausibility signal, the method includes inputting the second rotational speed; and using the second rotational speed for an activation process of the emergency unit according to the overspeed.

Abstract: A method for redundantly controlling a speed of an internal combustion engine, in particular of a vehicle, which includes a redundantly actuatable actuator for adjusting the speed, the method includes the following steps: detecting a first actual speed and a second actual speed of the internal combustion engine, wherein the actual speeds are detected simultaneously and independently of one another; detecting a first actual position and a second actual position of the actuator, wherein the actual positions are detected simultaneously and independently of one another; determining a plausible actual speed and a plausible actual position in accordance with the detected actual speeds and/or the detected actual positions; and actuating the actuator for adjusting the speed in accordance with the plausible actual speed and the plausible actual position.

Abstract: A system 10 for determining high accuracy gradient information includes linearization means 20, a sum unit 45, and state space model and observer means 50 for calculating a road gradient ?Road. The linearization means 20 includes an air resistance calculation unit 30 and a rolling resistance calculation unit 40. The means 50 includes a state space model 60 and a state space observer 70. The sum unit 45 determines a total sum wheel force ?FLij of wheel forces FLij. The linearization means 20 calculates an air resistance force FW and a rolling resistance force FR based on a vehicle velocity vCoG using approximation equations, calculates a linearized total sum force FSum by subtracting the air resistance force FW and the rolling resistance force FR from the wheel forces FLij, and inputs the linealized total sum force FSum to the state space model and observer means 50.

Abstract: To provide a vehicle accident analyzing apparatus in which reconstruction quality of low speed crashes is improved. An impact parameter determination apparatus 10 is provided with a triggering unit 20 which uses input signals from in-vehicle sensors, and an area determination unit 30, and a parameter calculation unit 50. The triggering unit 20 generates a trigger signal 21 based on the input signals for triggering the area determination unit 30 and the parameter calculation unit 50. The area determination unit 30 uses the input signals to calculate the most probable impact area 31. The parameter calculation unit 50 calculates the final desired crash parameters based on the input signals and the most probable impact area 31.

Abstract: A system 10 for determining high accuracy gradient information includes linearization means 20, a sum unit 45, and state space model and observer means 50 for calculating a road gradient ?Road. The linearization means 20 includes an air resistance calculation unit 30 and a rolling resistance calculation unit 40. The means 50 includes a state space model 60 and a state space observer 70. The sum unit 45 determines a total sum wheel force ?FLij of wheel forces FLij. The linearization means 20 calculates an air resistance force FW and a rolling resistance force FR based on a vehicle velocity vCoG using approximation equations, calculates a linearized total sum force FSum by subtracting the air resistance force FW and the rolling resistance force FR from the wheel forces FLij, and inputs the linealized total sum force FSum to the state space model and observer means 50.

Abstract: To provide a vehicle accident analyzing apparatus in which reconstruction quality of low speed crashes is improved. An impact parameter determination apparatus 10 is provided with a triggering unit 20 which uses input signals from in-vehicle sensors, and an area determination unit 30, and a parameter calculation unit 50. The triggering unit 20 generates a trigger signal 21 based on the input signals for triggering the area determination unit 30 and the parameter calculation unit 50. The area determination unit 30 uses the input signals to calculate the most probable impact area 31. The parameter calculation unit 50 calculates the final desired crash parameters based on the input signals and the most probable impact area 31.