7results about How to "Avoid Excessive Emissions" patented technology

The invention discloses a transient torque control method of a parallel hybrid power system and a related device, and relates to the technical field of hybrid diesel engines. When a whole vehicle is in a hybrid power mode, the torque demand state of the diesel engine is determined; if the torque demand state is torque increase, the working mode of the diesel engine is obtained, and the torque increase step length of the diesel engine is determined according to the working mode; and controlling the diesel engine to output torque according to the torque increasing step length. Under the transient working condition that the torque is increased, the torque increasing step length of the diesel engine can be determined according to the working mode of the diesel engine so as to control the diesel engine to output the torque, so that the torque increasing step length of the diesel engine can adapt to the working mode of the diesel engine, NOx original emission is converted in time in aftertreatment, the NOx tail emission peak value is reduced, and emission is prevented from exceeding the standard.

The invention discloses double-heat-source equipment and a heating control method and device thereof. The heating mode of the double-heat-source equipment comprises heat pump heating and furnace heating. The method comprises the steps that whether the current outdoor temperature is smaller than or equal to the preset temperature or not is judged; if the current outdoor temperature is smaller than or equal to the preset temperature, a combustion furnace is used for heating; if the current outdoor temperature is larger than the preset temperature, the heating mode needing to be used currently is determined according to the current fuel gas cost and the current electricity utilization cost; switching of heating modes is controlled according to the operation condition of the heat pump in the heat pump heating period; and switching of the heating modes is controlled according to the operation duration of the combustion furnace and the outdoor temperature in the combustion furnace heating period. The heating modes are switched according to the outdoor temperature, the fuel gas cost, the power utilization cost and the actual operation condition of the equipment, the heating mode with the optimal cost and the optimal heating efficiency is automatically switched for operation, energy loss is reduced, manual switching by a user is not needed, excessive greenhouse gas emission caused by excessive use of a combustion furnace is avoided, and the user experience is improved.

The invention relates to the technical field of low-carbon road building material monitoring and control, and discloses an epoxy asphalt mixture production construction carbon emission real-time monitoring and regulation method. The system comprises a sensor network module, a data processing and transmission module, a cloud intelligent analysis module, an automatic adjustment module and a human-computer interaction interface module. Multiple types of sensor nodes are arranged on a production line and a construction site, CO2 concentration, fuel consumption, temperature and other parameters are collected in real time, and the parameters are preprocessed by a data processing and transmission module and then uploaded to a cloud system for intelligent analysis and threshold judgment. The system can automatically adjust the combustion device, the heating equipment and the mixing power according to the real-time emission state, and dynamic control over carbon emission and energy consumption optimization are achieved. The system can generate a real-time monitoring curve and a historical report, has abnormal early warning and intelligent decision support functions, and realizes accurate monitoring and intelligent management of carbon emission of the epoxy asphalt mixture in the whole process from production to construction.

The utility model provides a carbon tank desorption system and a vehicle, the carbon tank desorption system comprises an air filter, a carbon tank and a heat conduction unit, the air filter is arranged on an air inlet pipeline of an engine, and the carbon tank is connected between an air inlet end of the engine and a fuel tank. The heat conduction unit comprises a flow dividing pipeline and a heat conduction device, the flow dividing pipeline is connected between the air outlet end of the air filter and the air inlet end of the carbon tank, and the heat conduction device is connected between the flow dividing pipeline and an exhaust pipeline of the engine so that gas heat in the exhaust pipeline can be conducted to the flow dividing pipeline. According to the carbon tank desorption system disclosed by the utility model, the heat conduction unit is arranged, so that air which is shunted into the shunting pipeline by the air filter can be heated by heat of gas in the exhaust pipeline through the heat conduction device, and therefore, the temperature of the air at the air inlet end of the carbon tank can be improved, and the desorption efficiency of the carbon tank can be further improved; and excessive pollutant emission caused by excessive loading capacity of the carbon tank is avoided.

This invention provides a near-zero carbon emission control system and method for internal combustion engines based on hydrogen fuel-assisted combustion. It includes an intelligent hydrogen fuel supply subsystem for receiving engine torque demand signals and calculating initial hydrogen supply parameters based on these signals; a combustion control and optimization subsystem for real-time monitoring of the combustion state in the engine combustion chamber and establishing a three-variable online optimization model of the in-cylinder combustion quasi-dimensional dynamics model based on the combustion state; and a collaborative main control subsystem for solving for optimal control parameters, dynamically optimizing and adjusting supply parameters and / or ignition parameters using a composite control strategy, predicting future engine load changes, and controlling the hydrogen supply. This invention significantly suppresses nitrogen oxide formation while ensuring high indicated thermal efficiency, and simultaneously avoids excessive emissions due to air-fuel ratio imbalance during transient processes, thus improving vehicle drivability and fuel economy.

The invention discloses a biomass acid desulfurization synergist as well as a preparation method and application thereof. The biomass acid desulfurization synergist comprises the following components in percentage by mass: 30-60% of a biomass acid active component, 10-30% of an alkalinity supplement, 5-15% of a metal ion chelating agent, 3-10% of a wetting dispersant and the balance of water. The biomass acid desulfurization synergist can supplement alkalinity in thermodynamics, can reinforce the mass transfer process in dynamics, can enhance the system stability and impact load resistance, and has important industrial application value.

The invention discloses a urea pump pressure control method and device of a hybrid vehicle and electronic equipment, and the method comprises the steps that after an engine stops, the aftertreatment temperature of the engine is obtained; determining whether to control the urea pump to release pressure or not according to the post-treatment temperature; when the urea pump does not release pressure, the charge state of the power battery and the whole vehicle demand power of the hybrid vehicle are obtained; and the pressure of the urea pump is adjusted according to the charge state and the whole vehicle demand power, so that the pressure of the urea pump is lower than the injection pressure of the urea pump in the engine running state. Certain urea pump pressure is maintained in the shutdown process of an engine, the leakage rate of a urea nozzle is reduced, and urea is prevented from being crystallized in a mixer; meanwhile, the urea injection system can reach injection pressure as soon as possible after the engine is started, and tail gas emission is prevented from exceeding the standard.