32results about How to "Good scavenging effect" patented technology

A two-cycle engine is provided that has a cylinder in which is formed a combustion chamber delimited by a reciprocating piston that via a connecting rod drives a crankshaft rotatably mounted in a crankcase. An inlet is provided for a supply of fuel into the crankcase, and an outlet leads out of the combustion chamber. In predetermined positions of the piston the crankcase communicates with the combustion chamber via at least one transfer channel. The cover is secured to a connecting flange of the cylinder, the cover closes off the transfer channel on an outer side of a cylinder, the connecting flange is inclined relative to the longitudinal axis of the cylinder by an angle that opens in a direction toward the crankcase.

The present invention relates to a mesoporous silica / ceria-silica composite and a method for preparing a mesoporous composite and, more specifically, to a mesoporous silica / ceria-silica composite which is composed of mesoporous silica having a hexagonal or cubic structure and ceria having a hexagonal structure provided on a surface and pores of the mesoporous silica, the oxidation state of the ceria being Ce4+ and Ce3+.

The invention belongs to the field of engines, in particular to a motorcycle or automobile engine supercharger. The invention includes an air intake pipe and an exhaust pipe installed at both ends of the casing, an eccentric cylindrical rotor is installed in the casing, a coupling is installed at one end of the rotor, the blades are loosely installed on the rotor cylinder, and several long blades are opened on the rotor cylinder Slot, the strip-shaped blade is inserted in the blade slot, the inner end of the blade slot is clockwise deflection angle a relative to the rotor axis, wherein the deflection angle a is 30° to 32°. The cross-sectional area of ​​the air inlet of the supercharging device is larger than that of the exhaust port, and the air pressure of the gas at the exhaust port increases to achieve the purpose of blade scavenging and supercharging. The special angle of the blade groove can improve the friction and vibration between the blade and the shell, and enhance the scavenging effect. The above-mentioned device has simple structure, small volume and good supercharging effect, and is suitable for supercharging engines of automobiles and motorcycles.

The present invention relates to one kind of cam shaft for motorcycle engine, and the cam shaft includes separately set single cylinder inlet cam and single cylinder exhaust cam. The inlet cam has an ascending section angle of 110+ / -1 deg, the exhaust cam has a descending section angle of 113+ / -1 deg, and the base radius is 10.50 mm. The motorcycle engine with the cam shaft has increased inlet valve opening lead angle and exhaust valve delayed close angle, relatively great overlap angle between the inlet valve and the exhaust valve, improved cooling on cylinder end, piston and other parts, lowered engine heat load and raised engine power.

The present invention discloses a new-type feed and its preparation method. Said new-type feed is made up by using corn protein powder and wheat bran as raw material and using neurospora strain No.17 as fermentation zymophyte seed through a certain preparation process. Said preparation process includes the following steps: making slant cuture and solid fermentation, the ratio of corn protein powder and wheat bran is 3:2, the ratio of dried culture medium and water is 1:1.5 and the ratio of MgSO4 and culture medium is 0.01%, and making culture for 4 days at 25deg.C so as to obtain the inventednew-type feed. The resolubility of protein in said new-type feed can be up to above 20%, and the antioxidant activity of said new-type feed can be up to above 200U / mL. Said new-type feed has high nutritional value.

The invention discloses a microminiature thermo-motive power generating set, comprising an engine pack and a generator rotor; the engine pack is an axial piston, and a cam is used for converting the up down reciprocating motion of a piston into the rotation motion of the cam; the generator rotor is directly connected with the cam, and two air cylinder bodies in the engine pack are arranged on two sides of the cam oppositely respectively. The microminiature thermo-motive power generating set has the advantages of simple and compact structure, simpleness in control, high working reliability, high efficiency and the like.

The invention discloses a micro-free piston power unit with a self-pressurized type uniflow scavenging structure. The micro-free piston power unit comprises a gas cylinder, a stator winding and a rectifier, the stator winding is wound around the outer surface of the gas cylinder, and the rectifier is connected with the stator winding; the gas cylinder is internally provided with two cavities and an exhaust chamber, the exhaust chamber is formed between the two cavities, partition plates are arranged between the two ends of the exhaust chamber and the two cavities, and the exhaust chamber is provided with an exhaust opening; the two cavities are symmetrically distributed through the center axis of the exhaust opening, a gas inlet is formed in the upper end of each cavity, and a self-pressurized gas inlet channel is formed in the inner bottom of each cavity; and two magnetic pistons are located in the two cavities correspondingly, thus the cavities are internally divided into scavengingchambers and combustion chambers, a piston connecting rod penetrates through the partition plates to connect the two magnetic pistons, and the piston connecting rod is provided with an axial groove structure. According to the self-pressurized type uniflow scavenging structure, the structure design is simple, the gas inlet pressure is increased through the self operation process, meanwhile, the position of a waste gas outlet is changed to form the uniflow scavenging mode, and the scavenging effect of the micro power unit is improved advantageously.