4results about How to "Reduce misfire" patented technology

The invention discloses a combustor and a gas stove. The combustor comprises a furnace end, a fire cover, an ignition needle, an induction needle and a fluid machine, the furnace end is provided with a first containing cavity, a second containing cavity and a third containing cavity, the fire cover covers the furnace end and comprises an outer ring fire cover, an inner ring fire cover and a gas conveying channel, the outer ring fire cover is provided with outer ring fire holes communicated with the first containing cavity, the inner ring fire cover is provided with inner ring fire holes communicated with the third containing cavity, and the gas conveying channel is communicated with the second containing cavity. The outer ring fire cover surrounds the inner ring fire cover, a clamping cavity is formed between the outer ring fire cover and the inner ring fire cover, the gas conveying channel is communicated with the second containing cavity, the tip end of the ignition needle is arranged in the clamping cavity and is not higher than the gas outlet end of the gas conveying channel, the tip end of the induction needle is arranged in the clamping cavity and is not higher than the gas outlet end of the gas conveying channel, and the fluid machine is suitable for providing blast air for the second containing cavity. The blast air can flow out of the air conveying channel to be supplemented to the flame roots of the inner ring fire holes and / or the outer ring fire holes, and due to the fact that the air outlet end of the air conveying channel is higher, interference of the blast air exhausted from the air conveying channel to ignition and fire sensing is reduced.

The embodiment of the application discloses an EGR control method and device, a vehicle controller and a storage medium. The method comprises the following steps: determining the actual relative humidity of the mixed gas at the specified position according to the air flow data in the intake passage, the current EGR rate and the temperature and pressure of the mixed gas at the specified position; determining the target relative humidity of the mixed gas at the specified position according to the working condition data and the environmental state data of the engine; and determining the target EGR rate according to the actual relative humidity, the target relative humidity and the current EGR rate. The embodiment of the application can reduce the safety risks such as engine misfire and low-temperature icing, and improve the safety.

The application provides a high-compression-ratio ethanol fuel gasoline engine combustion system and a control method thereof, wherein the system comprises: a high-compression-ratio combustion structure with a compression ratio of 14-15, the combustion structure comprises a piston top with an omega-shaped shallow pit structure, and the surface of the piston top is provided with a silicon nitride ceramic coating; a cold start enhancement system comprising a PTC ceramic heating module and a high-energy ignition device; a fuel injection system comprising a high-pressure common rail system and a multi-hole swirl oil injector; and a control system comprising an ECU control unit and a UEGO wide-range oxygen sensor. The high-compression-ratio ethanol fuel gasoline engine combustion system and the control method thereof can realize high thermal efficiency, reliable start at low temperature, stable combustion and low emission.

The utility model provides a low-nitrogen flat flame burner, which belongs to the technical field of kiln burners, and comprises a main body, a gas pipe and a baffle ring, the main body is fixedly arranged on a kiln; a first cavity, a second cavity and a ventilation cavity channel communicated with the first cavity and the second cavity are formed in the main body; the gas pipe is coaxially arranged in the ventilation cavity channel; the gas pipe is provided with a connecting end and a gas outlet end, and the connecting end penetrates through the main body and extends out to be communicated with gas conveying equipment; the air outlet end is communicated with the second chamber; the baffle ring is arranged in the ventilation cavity channel and is coaxially and fixedly connected with the gas pipe; and in the direction from the first cavity to the second cavity, the outer diameter of the baffle ring is gradually increased, so that air passing through the ventilation cavity channel is spread back to the central axis of the gas pipe. According to the low-nitrogen flat flame burner provided by the invention, the baffle ring can prevent air from directly impacting the gas pipe, so that the air can be more uniformly distributed around a burning area, the stability of the root of flame is influenced, the blow-off phenomenon is reduced, and the service life of the burner is prolonged.