3 results about "Homogeneous charge compression ignition" patented technology

An engine low-load emission control method and an engine, comprising: acquiring first processing parameters for removing nitrogen oxides generated by the engine under idling conditions, and a first emission amount of a target gas generated by the engine; controlling the engine to inject fuel at a reference injection time while the engine is idling, so that the engine is in a homogeneous charge compression ignition (HCCC) state, reducing nitrogen oxides in the exhaust gas and forming the target gas; electrically heating the engine's exhaust pipe, so that the target gas reaches the target temperature for catalysis, thereby catalyzing the target gas; acquiring second processing parameters related to the electricity consumption for heating the exhaust pipe, and a second emission amount of the uncatalyzed target gas; delaying the reference injection time and / or reducing the electricity consumption until the second processing parameter is less than or equal to the first processing parameter, and the second emission amount is less than or equal to the first emission amount, outputting the reference injection time as the target injection time, and outputting the target electrical parameters for electrically heating the engine's exhaust pipe.

The invention belongs to the technical field of engines, and particularly discloses an engine cylinder block structure and an operation method thereof, an engine and a vehicle, the engine cylinder block structure comprises a first cylinder and a second cylinder, a first piston is slidably connected in the first cylinder in the axial direction, and a second piston is slidably connected in the second cylinder in the axial direction; the driving assembly is used for driving the first piston and the second piston to slide; the first cylinder is provided with a sealable first air inlet hole and a sealable first air outlet hole, the second cylinder is provided with a sealable second air inlet hole and a sealable second air outlet hole, and the device further comprises a communicating assembly used for communicating the first air outlet hole with the second air inlet hole; the volume of the first cylinder is larger than that of the second cylinder. By the adoption of the scheme, the advantages of a two-stroke engine and a four-stroke engine can be integrated, the variable compression ratio is achieved, the homogeneous compression ignition acting mode of the engine is achieved, and the heat efficiency and acting efficiency of the engine are improved.

The invention discloses a combined cooling heating and power system based on SOFC (solid oxide fuel cell) hybrid power, which belongs to the technical field of hybrid power generation and comprises a solid oxide fuel cell, a vortex internal combustion engine, a homogeneous compression ignition internal combustion engine, an absorption refrigerator, a heat exchange module and a mixer. The cathode of the solid oxide fuel cell receives air and exhausts cathode tail gas, and the cathode tail gas is cooled and then sent to the absorption refrigerator to obtain chilled water; the anode of the solid oxide fuel cell receives fuel and discharges anode tail gas, the anode tail gas is heated and then sent to the homogeneous compression ignition internal combustion engine and the vortex internal combustion engine for combustion, and smoke of the homogeneous compression ignition internal combustion engine and the vortex internal combustion engine is mixed and then exchanges heat with the hot water circulation pipeline to obtain hot water. Ignition of a spark plug of the vortex internal combustion engine can accurately control the combustion time, and the problem that the combustion starting time of a homogeneous compression ignition internal combustion engine is difficult to control is solved; the power and hot water output of the internal combustion engine are flexibly controlled by adjusting the afterburning rate of the anode tail gas and the alternative fuel, and the problem that the thermoelectric output performance is reduced when the gas turbine operates under variable working conditions is solved.