摘要:
The invention relates to an electric motor assembly, particularly for driving a fan for an engine cooling system and/or an air conditioner of a motor vehicle, comprising an electric motor and a motor control device for activating the electric motor. According to the invention, the motor control device can be adjusted according to a characteristic curve (1,2,3,4) of the electric motor and/or of the fan, and thereby the power and/or rotational speed of the electric motor can be adjusted.
摘要:
The invention relates to an electric machine, comprising a stator (2), a rotor (3), a split cage (4), which separates a wet region (5) from a dry region (6), control electronics (9) and an interconnection element (7, 8), which produces an electrical contact between the stator (2) and the control electronics (9), wherein the rotor (3) is arranged in the wet region (5), wherein the interconnection element (7, 8) is surrounded at least partially by an insulating element (10), and wherein the insulating element (10) divides the dry region (6) into a first subregion (60), in which the stator (2) is arranged, and a second subregion (61), in which the control electronics (9) are arranged.
摘要:
A method of operating a resistance heating element and a device for carrying out the method are described. During a first step, the resistance of a resistor of the resistance heating element is determined at a known base temperature. In a second step, the resistance setpoint value is determined as a function of resistance of the resistor at the known base temperature and known temperature coefficients. The resistance heating element is activated by approximately setting the resistance setpoint value in order to heat the resistance heating element to the given setpoint temperature.
摘要:
A breather valve for the gas tank of an internal combustion engine having an adsorption filter which is linked to the atmosphere by a breather line which is controlled by a shut-off valve. The tank breather valve is constructed so that pressure build up in the fuel tank, the lines, and the adsorption filter do not lead to damage of the valves. The magnetic circuit of the shut-off valve provides that above a predetermined pressure in the adsorption filter, the generated pressure is sufficient to open the shut-off valve, thereby facilitating pressure relief without any damage. The breather is particularly suitable for internal combustion engines in motor vehicles.