5 results about "Engine coolant temperature sensor" patented technology

The invention relates to a fan control system and method for a vehicle. A fan control system for a vehicle may include: a vehicle speed sensor for sensing a vehicle speed; the engine cooling liquid temperature sensor is used for sensing the temperature of engine cooling liquid; the fan is arranged adjacent to the engine coolant radiator and is used for providing flowing air for the engine coolant radiator; and a controller configured to determine whether the vehicle is in an idle state based on a vehicle speed sensed by the vehicle speed sensor, determine whether a temperature of the cooling liquid is in a first temperature range based on a temperature of the cooling liquid sensed by the engine cooling liquid temperature sensor when the vehicle is in the idle state and the fan is not operating, and control the engine cooling liquid when the vehicle is in the idle state and the fan is not operating. And when the temperature of the cooling liquid is within the first temperature range, whether a fan forced operation condition is met or not is determined, and when the fan forced operation condition is met, the fan is made to operate for first preset time.

Internal combustion engine processes, including: Setting an internal combustion engine torque actuator based on the internal combustion engine oil temperature (EOT), estimated by applying an excitation signal, comprising a pulse-width modulated duty cycle, a voltage and an electric current, applied to a solenoid valve (OCV) of a variable cam control (VCT) device, and using an associated relationship stored in non-volatile memory (110) that controls the camshaft solenoid duty cycle and relates the camshaft angular velocity of the device to the combustion engine oil temperature (EOT), wherein the adjustment is made in response to degradation of a sensor used to measure the combustion engine oil temperature (EOT) directly or indirectly, and damage to the non-volatile memory (110), wherein the non-volatile memory (110) includes a keep-alive memory (KAM) of a combustion engine control unit (12), wherein the sensor includes one or more of an combustion engine oil temperature sensor (EOT) coupled to an oil pan, a combustion engine coolant temperature sensor (ECT), an air charge temperature sensor (ACT), and a mass airflow sensor (MAF).

The application provides a vehicle engine coolant temperature sensor signal sticking detection method, electronic equipment, readable storage medium and vehicle, and the method comprises the following steps: obtaining a first maximum engine coolant temperature change amplitude after the vehicle starts; if the first engine coolant temperature change amplitude is less than a preset temperature threshold; if yes, judging whether the current working condition of the vehicle meets a first preset condition; if yes, the vehicle performs a temperature rising / temperature dropping operation, and a second maximum engine coolant temperature change amplitude is obtained; if the second engine coolant temperature change amplitude is less than the preset temperature threshold, the vehicle performs a temperature dropping / temperature rising operation, and a second maximum engine coolant temperature change amplitude is obtained; if the third maximum engine coolant temperature change amplitude is less than the preset temperature threshold, it is determined that a signal sticking fault exists. The application can accurately detect and determine whether a vehicle engine coolant temperature sensor has a sticking fault.

This invention relates to the field of engine manufacturing heat treatment technology, and discloses an intelligent control method and system for engine cooling fans based on dual temperature sensors. The method includes acquiring the detection values ​​from an engine coolant temperature sensor and a radiator temperature sensor; determining whether the engine coolant temperature sensor detection value is greater than or equal to a large circulation opening temperature threshold; calculating the inlet and outlet water temperature difference when the determination result is yes; generating a target fan speed command by determining the gradient interval corresponding to the inlet and outlet water temperature difference and sending it to the cooling fan; statistically analyzing the duration for which the inlet and outlet water temperature difference is greater than or equal to a preset fault threshold; executing a conservative control strategy when the duration reaches an anti-shake time threshold; and determining whether the detection value reaches a preset absolute threshold to control the cooling fan to operate at full speed. This invention adjusts the fan operation state by calculating the inlet and outlet water temperature difference through dual temperature feedback, avoiding errors from a single temperature source determination, filtering out abnormal data interference, and maintaining safe cooling under fault conditions.

The invention discloses an intelligent automobile and motorcycle cooling system which comprises a radiator, a flow guide cover installed on the radiator, an intelligent radiator fan installed on the upper portion of the flow guide cover of the radiator and a main radiator fan installed on the lower portion of the flow guide cover of the radiator. An input terminal of the radiator fan control unit is respectively connected with a power supply, the ground, an engine coolant temperature sensor, an output terminal of an air conditioner relay and a vehicle speed sensor on a wheel hub; an output terminal of the radiator fan control unit is respectively connected with an intelligent radiator fan relay and a main radiator fan relay, the intelligent radiator fan relay is connected with and controls an intelligent radiator fan, and the main radiator fan relay is connected with and controls a main radiator fan; intelligent self-adaptive control can be achieved, the heat dissipation requirements of automobiles and motorcycles under various complex working conditions are met, constant temperature is promoted, the air quality in the automobiles can be guaranteed, the driving and riding comfort is improved, the application range is wide, stability and reliability are achieved, the cost performance is high, and popularization is facilitated.