FORM 2 THE PATENT ACT 1970 (39 of 1970) & The Patents Rules, 2 0 03 COMPLETE SPECIFICATION (See Section 10, and rule 13) 1. TITLE OF INVENTION AN OLIVE-SHAPED ROTARY ENGINE 2. APPLICANT(S) a) Name : HUA, FENG b) Nationality : CHINESE National c) Address : NO. 171 JIANGXI ROAD, QINGDAO CITY, SHANDONG PROVINCE, 2 66071, CHINA 3. PREAMBLE TO THE DESCRIPTION The following specification particularly describes the invention and the manner in which it is to be performed : - Technical Field This invention involves the internal combustion engine, especially the olivary-rotor engine. Background Technology Currently the piston reciprocating engine is commonly applied among automobiles. The piston reciprocating engine drives piston's reciprocating and rectilinear motion by combusting in the combustion chamber. Then the piston's reciprocating motion is converted to crankshaft's rotary motion through the connecting rod and the crankshaft, thus driving gearing's output. The piston reciprocating engine is of large reciprocating inertia, complex structure and large volume. In this respect, Wankel, a German engineer, invented rotary internal combustion engine in 1950s. The rotary internal combustion engine can directly convert the heat energy that is given off after the combustion and expansion of the fuel and air to the mechanical energy that drives the rotation of the rotor. Then the rotor drives the principal shaft to put out energy. As it cancels the rectilinear motion, the rotary internal combustion engine of the same power is of simpler structure, smaller volume, lighter weight, lower vibration and noise. Even though it's of many advantages, the rotary internal combustion engine is not widely applied because the shape of its combustion chamber can't make the fuel fully combust. Besides, the path of the flame propagation is long, making the loss of the fuel oil be increased. In addition, the rotary internal combustion engine can only be ignited by spark ignition while it can't be ignited by compression ignition, so the diesel fuel is not applicable to the rotary internal combustion engine. Furthermore, the rotary internal combustion engine is of small output torque and of high structural requirements, such as the lubrication of the engine, cooling and sealing. Therefore it's of high manufacturing process requirements. Considering the above reasons, the rotary internal combustion engine can't be widely applied. Invention Items This invention aims at overcoming the above defects the existing piston engine and rotary internal combustion engine have, putting forward a new-type olivary-rotor engine. The olivary-rotor engine is of simple structure, small volume and light weight. In addition, it operates stably, produces small vibration, improves output torque and makes fuel fully combust. It's of wide range of the available fuels and minor mechanical wear. This invention is realized by the following technical proposals: The olivary-rotor engine consists of crankshaft, shell and triangle rotor. The shell mould cavity is olivary and both end faces is covered with end caps. The triangle rotor is placed in the olivary mould cavity. The mould cavity curve and the hollows of triangle rotor are of the same breadth, of which the shaft line of the principal shaft of the crankshaft is coincident with the center of the mould cavity. The rotor is connected with the crankshaft through the connecting handle. The cylinder on the connecting handle is the rotor's connecting shaft, which is equipped on the center hole of the triangle rotor. Its shaft line is coincident with the center line of the rotor. The connecting shaft of the rotor is sleeved on the crankpin through its eccentric orifice. The connector on one side of the connecting shaft of the rotor is equipped with gear set, which is used to control the rotation of the connecting handle. The crankshaft rotates when the gear set drives the connecting handle to rotate, thus making the moving path of the center of the connecting shaft of the rotor is shuttle-like. Assume the crank radius of the crankshaft is R, the distance between the rotor connecting shaft of the rotor and the shaft line of the crankpin is R, and the shuttle-like moving path is the arc line crossed by two circles with the distance from Assume the center of the crankpin is opposite to the connecting line of the center of the principal shaft of the crankshaft and its outer corner with the major axis of the shell is a. And assume the center of the connecting shaft of the rotor is opposite to the connecting line of the center of the crankpin and its outer corner with the connecting line between the center of the crankpin and the center of the principal shaft of the crankpin is [3. The relation of the two angles is: The gear set in this invention is made up of the following gears. The gear of the connecting handle is fixed on the connector on one side of the connecting shaft of the rotor. This gear is sleeved on the crankpin and is of the same shaft with the crankpin. Another gear is fixed on the shell. The gear is sleeved on the principal shaft of the crankshaft Its center is coincident with the rotation center of the crankshaft. The rotary shaft of the coaxial idle pulley is equipped on the gear carrier of the crankshaft and is meshed with the fixed gear on the shell and the connecting handle respectively. Considering the above relations of angles and transmission gear ratio between the gears meshed with each other in the gear set, the crankshaft is reverse rotary with the connecting handle and the transmission gear ratio between the connecting handle and the crankshaft is: Because the cycle of a is 180°, when 180° < a<360°, it's acceptable to substitute a - 180°. The transmission ratio of the fixed gear (54) of the shell and the idle pulley (53) is 2, and the transmission ratio of the idle pulley and the gear of the connecting handle is: Two sets of air inlet and air outlet are placed on the shell. The symmetrical setting is placed on the hollows near two top ends of the olivary mould cavity, of which the air inlet is close to the olivary top end. The combustion chamber is placed on the air outlet or air inlet. Its mould cavity can be made up of two circular spaces where two circles are crossed with each other. The inlet channel is located at the crossing place. At this time it becomes double combustion chambers. Its mould cavity can also be a circular space and its air inlet channel is located on the sides of the circular space. The compression ratio of the engine depends on the volume of the combustion chamber. According to different requirements of different fuels, the sides are equipped with either spark plug or oil sprayer. In the middle of the two cambered surfaces of the olivary shell is equipped with grooves respectively, in which is covered with sealing strips. The sealing strips cling to the rotor through the leaf spring in the groove. The surface where the sealing strip directs towards the triangle rotor is double hollows, which are applicable to the arc curve of the rotor with big radius and the arc curve of the rotor with small radius respectively. Both ends of the rotor are covered with triangle arc sealing strips. They are placed in the groove near the end's edge of the rotor. The leaf spring is equipped in the groove to make the sealing strips cling to the end cap of the shell. The side of the end cap that directs towards the rotor can be inserted with ceramic plates, which can reduce the heat loss when the rotor rotates because of its good thermo insulating property. A balancing plate is fixed on the connecting handle and it's used to balance the rotor's engine. The cambered surface of the triangle rotor is a closing camber line, which is formed by three 60°arcs with large radius being crossed with three 60°arcs with small radius. The mould cavity of the olivary shell is a closing camber line, which is formed by two 120°arcs with large radius being crossed with two 120°arcs with small radius. Therein the small radius r=(0.5 ~ 3)R, large radius R' = 2(3 + √¯3)R + r The advantages of this invention are: This engine is of small volume, light weight, large output torque under the same working volume, good accelerating ability and low working noise. Compared with piston reciprocating engine, it's of simpler structure, less operating parts and more stable operation. Compared with the existing triangle rotary internal combustion engine, the shape of the combustion chamber in this invention can make the fuel fully combust and use diesel oil as the fuel. In addition, when the explosive power is at its maximum, there's generally no torque output for piston reciprocating engine and rotary internal combustion engine; while when the explosive power is at its maximum, there's torque output for the engine of this invention. Compared with the existing engine, the torque output maximum has been greatly improved. The rotating speed of the crankshaft of this invention is slower than that of the triangle rotary internal combustion engine, so it can not only reduce the loss of the engine's parts but also reduce the requirements of lubrication and sealing. All in all, whether it's under the high rotating speed or under the low rotating speed, the torque output of the engine of this invention is larger. It overcomes the defect of smaller torque output when the triangle rotary internal combustion engine operates under low rotating speed, thus saving the consumption of the fuels. Illustration Figure 1 Structural diagram of the olivary rotary internal combustion engine Figure 2 Structural diagram of the crankshaft Figure 3 Structural diagram of the connecting handle Figure 4 Shuttle-like moving path of the shaft line of the rotor's connecting shaft Figure 5 Outline drawing of the rotor Figure 6 Outline drawing of the olivary shell Figure 7 Overall structural diagram of the engine Figure 8 Shape of the first kind of double vortex combustion chamber Figure 9 Shape of the second kind of double vortex combustion chamber Figure 10 Shape of the vortex combustion chamber Figure 11 Shape of the turbulent combustion chamber Figure 12 Structural diagram of the first kind of double vortex combustion chamber in operating state Figure 13 Structural diagram of the gas distribution of this invention Figure 14 Structural diagram of the sealing and lubrication of the rotor's cambered surface Figure 15 Structural diagram of the sealing and lubrication of the rotor's end face Figure 16 Working diagram when the center of the rotor is at the top dead center Figure 17 Working diagram when upper working chamber take in air and lower working chamber combusts Figure 18 Working diagram when the center of the rotor is at the bottom dead center and lower working chamber is under power Figure 19 Working diagram when upper working chamber combusts and lower working chamber is under power Figure 20 Working diagram when the center of the rotor is at the top dead center and upper working chamber combusts Figure 21 Working diagram when upper working chamber is under power and lower working chamber discharges air Figure 22 Working diagram when the center of the rotor is at the bottom dead center Figure 23 Working diagram when upper working chamber discharges air and lower working chamber takes in air Implementation Method This implementation takes birotary engine as an example. The birotary engine is of compact structure and stable operation, being equivalent to piston reciprocating four cylinder engine. The structure of its crankshaft is shown by figure 2. This engine is made up of the crankshaft 3, the shell 1, the connecting handle 4, the gear set and the triangle rotor 2. Therein the mould cavity of the shell 1 is olivary. Both end faces are covered with the end caps 17. The triangle rotor 2 is placed in the mould cavity. The mould cavity curve and the hollows of the triangle rotor axe of the same breadth. This engine controls the center of the rotor to follow the shuttle-like moving path by the operating mechanism which is made up of the crankshaft 3, the connecting handle 4 and the gear set. The contact between the inner wall of the olivary shell and the outer edge of the rotor limits the rotation of the rotor 2. When the rotor moves in the shell, it divides the space in the shell and makes the space of two working chambers change continually. Both working chambers are equipped with air inlet, air outlet and combustion chamber. They are placed on the hollows near two top ends of the olivary shell. With the cooperation of controlling valve in the valve mechanism, two working chambers can realize the basic working process of the internal combustion engine respectively. As is shown by the figure, the crankshaft 3 is placed at the center of the mould caviry of the olivary shell, that is, its shaft line is coincident with the center line. The connecting handle 4 is the connector between the rotor 2 and the crankshaft 3. Its cylinder is the connecting shaft 41 of the rotor, which is placed in the center hole of the rotor 2. Its shaft line is coincident with the center line of the rotor. The connecting shaft 41 of the rotor is sleeved on the crankpin 32 through its eccentric orifice. Assume the radius of the crankshaft is R, the eccentric orifice between the connecting shaft 41 of the rotor and the shaft line of the crankpin 32 is √¯3R. The connector 42 on one side of the connecting shaft 41 of the rotor is equipped with gear set, which is used to control the driving mechanism rotated by the connecting handle 4. When the principal shaft 31 of the crankshaft rotates, the gear set drives the connecting handle 4 to rotate, making the shaft line of the rotor's connecting shaft 41 of the connecting handle 4 shuttle-likemoving path, that is, the shuttle-like moving path is the arc line crossed by two circles with the distance from the center of the circle 2√¯3(1 + √¯3)R and radius 2(1 + √¯3)R It is shown by figure 4. As is shown by figure 4, assume the outer corner between the connecting line O1O2 and the principal shaftof the shell is a. O1O2 connects the center O2 of the crankpin The above gear set is made up of the following four gears: the gear fixed on the connecting handle 4, that is, the gear 51 of the connecting handle is sleeved on the crankpin 32 and is coaxial with the crankpin 32; the gear fixed on the shell 1, that is, the fixed gear 54 of the shell is sleeved on the principal shaft 31 of the crankshaft and is coaxial with the principal shaft 31 of the crankshaft; the rotary shaft 55 of the coaxial idle pulleys 52 and 53 meshed with the gear 51 of the connecting handle and the fixed gear 54 of the shell respectively is placed on the gear carrier 56. Therein the fixed gear 54 of the shell and the idle pulley 53 are common circular gear and the transmission ratio is 2; the idle pulley 52 and the gear 51 of the connecting handle are gears with special shape and the transmission ratio is: with the center O1 of the principal shaft of the crankshaft. And assume the outer corner between the connecting line O2O3 and the connecting line O1O2 is β. O2O3 connects the center O3 of the connecting shaft of the rotor with the center O2 of the crankpin. O1O2 connects the center O2 of the crankpin with the center O1 of the principal shaft of the crankshaft. The relation of the two angles is: Considering the above relations of angles, the crankshaft 3 is reverse rotary with the connecting handle 4. According to the transmission gear ratio of the gear set, the rotating speed of the connecting handle 4 = the rotating speed of the crankshaft 3 x When 0°