12results about "Fail safe" patented technology

A leak detection system for a coolant system includes a coolant reservoir (64) including a coolant holding portion (81, 82) configured to store coolant for the coolant system and a gas holding portion, a reservoir inlet fluidically connected to the gas holding portion (84), a reservoir outlet (90) fluidically connected to the coolant holding portion, and a pressure relief valve (94) including a valve inlet portion (96) fluidically connected to the coolant holding portion and a pressure relief outlet (98). The pressure relief valve is configured to respond to pressure in the gas holding portion to vent coolant from the coolant holding portion through the pressure relief outlet without venting gas from the gas holding portion.

The invention relates to a method for operating a drive unit (10) of a motor vehicle, in which the drive unit (10) comprises an internal combustion engine (12) with an output shaft (16), a water pump (20) driven by the output shaft (16) via a traction element (28), and at least one knock sensor (34) by means of which irregular combustion occurring in the internal combustion engine (12) can be detected. It is verified whether a speed sensor (36), by means of which the rotational speed of the output shaft (16) can be detected, provides a speed signal characterizing the rotational speed. It is verified whether the knock sensor (34) provides a knock signal intended for characterizing irregular combustion.If it is determined that the speed sensor (36) provides the speed signal and the knock sensor (34) provides the knock signal, it is checked on the basis of the knock signal whether the output shaft (16) drives the water pump (20) via the traction element (28).

The application discloses a kind of clutch fan rotation speed abnormality monitoring method, device, equipment and medium.The clutch fan rotation speed abnormality monitoring method includes: obtaining the current operating state of the engine of vehicle, and according to the current operating state of the engine, determine the target fan rotation speed abnormality early warning condition of electric control silicon oil clutch;When the electric control silicon oil clutch fan meets the target fan rotation speed abnormality early warning condition, trigger target timer, and when target timer timing overflow, generate fan rotation speed abnormality early warning signal.The technical scheme of the embodiment of the application can discover fan rotation speed abnormality in time and prompt user, to avoid the closed-loop control failure of electric control silicon oil clutch fan, guarantee user driving safety.

The invention relates to a motor vehicle comprising: - a grille (K) including a cooling system which includes ventilation flaps (V) actuable between closed and open positions, either opposing or allowing airflow; - at least one controller (S) connected to the flaps (V), said controller comprising: - a means (C) for counting flap actuations; - at least one warning means (A) sending an alert if the number of flap (V) actuations reaches a first predetermined threshold; - at least one means (B) for locking the flaps in the open position, commanding the flaps (V) to be locked in the open position if the number of flap (V) actuations reaches a second predetermined threshold higher than the first threshold. The invention also relates to a method and a program based on such a vehicle. Figure 1

This invention discloses a cooling device that circulates refrigerant to a cooled object via a siphon cycle using the object being cooled, mounted on a vehicle, as a heat source. The cooling device includes: a tank disposed above the cooled object for storing the refrigerant; an outlet passage opening inside the tank for allowing the refrigerant to flow out; a passage member extending from the inside to the outside of the tank, with its opening end located on the inner side of the tank positioned above the opening of the outlet passage; and a determining unit disposed on the outer side of the passage member located outside the tank, capable of determining the position of the opening end inside the tank.

An abnormality determination device, an abnormality determination method, and a storage medium for a water pump are provided. An input variable mapped by processing image data obtained by capturing an outer surface of the water pump is acquired. A circuit executes a plurality of provisional determination results from a plurality of mappings. Each of the plurality of provisional determination results is obtained by executing a provisional determination process for each of output variables output from the plurality of mappings. A determination determination process determines provisional determination results that account for more than half of the plurality of provisional determination results as a final determination result of whether a leakage of cooling water has occurred in the water pump.

Methods and systems are provided for cooling an engine by operating an electrically driven air intake compressor. In one example, in response to determining, based on a measured or inferred engine temperature, that the engine temperature is greater than a threshold temperature, an electrically driven air intake compressor of the vehicle is employed to direct air through a charge air cooler and engine cylinders while the engine is rotating without fueling. In this way, the engine temperature can be reduced even in conditions that would not normally be suitable for engine cooling, such as at idle-stop or when the engine coolant system is degraded.

The present application relates to a kind of water leakage diagnostic method, device, equipment and storage medium, method includes: in the case where oil-electric hybrid vehicle is powered on and vehicle meets first preset condition, control electronic water pump in cooling system in vehicle to operate, to drive the cooling liquid flow of cooling system in heating ventilation and air conditioning cycle;First preset condition includes the one or more of the following conditions: the shutdown duration of vehicle is greater than preset duration, the temperature of cooling liquid is less than preset temperature threshold, upper cycle water leakage fault flag is true;In the case where the first operating parameter of electronic water pump obtained meets second preset condition, determine that cooling system appears cooling liquid leakage;Second preset condition is that the speed in first operating parameter is greater than first preset speed threshold, and the current in first operating parameter is less than first preset current threshold.The present application carries out cooling liquid leakage diagnosis by the operating parameter of original electronic water pump in cooling system, does not need to increase additional component, and can be executed in advance after vehicle is powered on, can foresee the cooling liquid leakage of cooling system in time, improves the timeliness of water leakage diagnosis.

A leak detection system for a coolant system includes a coolant reservoir including a coolant holding portion configured to store coolant for the coolant system and a gas holding portion, a reservoir inlet fluidically connected to the gas holding portion, a reservoir outlet fluidically connected to the coolant holding portion, and a pressure relief valve including a coolant inlet portion fluidically connected to the coolant holding portion and a pressure relief outlet. The pressure relief valve is configured to respond to pressure in the gas holding portion to vent coolant from the coolant holding portion through the pressure relief outlet without venting gas from the gas holding portion.

Apparatus 1 for controlling the temperature of diesel exhaust fluid (DEF), such as an aqueous urea solution 10, in a DEF tank 3 comprises a coolant reservoir 2, the DEF tank, a coolant diverter valve (CDV) 4, coolant lines 20,21,22 to circulate a coolant 7 (e.g. water and / or ethylene glycol) between the reservoir and the tank, and a controller (60, figure 4) that commands the CDV to open / close by energising / de-energising the CDV. The controller determines that the CDV valve has failed to close based on detecting a location of a solenoid armature (35, figure 6a), ideally using a locator element (70, figure 6a) disposed on the armature, being incongruous with a location the armature should be in when the CDV is closed after the controller has commanded the CDV to close. A The locator element is ideally a magnetic or a bimetallic element that is either: mounted to a surface of the armature; integrally formed with the armature; or constrained to move synchronously with the armature. The CDV is ideally a 2 way 2 position normally closed valve.

The invention relates to a motor vehicle comprising a powertrain (G) and a cooling system including a ventilation means and movable flaps (V) for ventilating the powertrain (G), and at least one flap actuator (A). The motor vehicle further comprises: - a means for detecting whether the powertrain requires cooling or does not; - a means for controlling the opening / closing of the flaps (V); - at least one controller (C) that evaluates whether it receives the flap (V) status information within a predetermined time after a flap (V) opening / closing command, and if so, determines a corresponding normal operation of the flap (V) actuation, or if not, determines a corresponding failure of the flap (V) actuation. The invention also relates to a method and a program based on such a vehicle. Figure 1

The invention relates to a valve device (1) which is supplied in particular for a vehicle cooling system. The device comprises a housing (2) having at least two fluid connectors (3), a valve device (5) which can be adjusted at least between a first valve position and a second valve position, and a drive device (10) for adjusting the valve device (5) between the first valve position and the second valve position. The valve device is characterized by an integrated safety adjustment device (24). This device is provided such that it moves the valve device (5) from the first valve position to the second valve position in the event of an incident in which the electrical supply, in particular that of the vehicle, is interrupted. [Fig. 1]