阅读说明：本技术 N棱柱形发动机气缸及直列六缸发动机 (N-prism engine cylinder and inline six-cylinder engine ) 是由 曹书玮 曹剑天 于 2019-10-29 设计创作，主要内容包括：本发明涉及一种N棱柱形发动机气缸及直列六缸发动机；发动机气缸含有缸体﹑活塞﹑进气口﹑排气口﹑进气门﹑排气门和火花塞,缸体为N棱柱形缸体,缸体的横截面为压扁状的N边形,缸体的内侧面是与缸体的外形配合的N棱柱面,活塞是与缸体的内侧面匹配的N棱柱形活塞,活塞与缸体的内侧面之间的缝隙处从上到下依次安装有M个横向设置的活塞环；直列六缸发动机中的六个N棱柱形发动机气缸一字排开设置,每个发动机气缸的缸体的横截面的横向方向均与六个发动机气缸的排列方向垂直；本发明使发动机的整体长度得到了减小,便于发动机在汽车内的安装,为乘员舱留出了更大的空间,且降低了汽车用直列六缸发动机对凸轮轴和曲轴强度的要求。(The invention relates to an N-prism engine cylinder and an inline six-cylinder engine; the engine cylinder comprises a cylinder body, a piston, an air inlet, an air outlet and a spark plug, wherein the cylinder body is an N-prism-shaped cylinder body, the cross section of the cylinder body is a flattened N-edge shape, the inner side surface of the cylinder body is an N-prism-shaped surface matched with the shape of the cylinder body, the piston is an N-prism-shaped piston matched with the inner side surface of the cylinder body, and M piston rings which are transversely arranged are sequentially arranged at a gap between the piston and the inner side surface of the cylinder body from top to bottom; six N prismatic engine cylinders in the in-line six-cylinder engine are arranged in a line, and the transverse direction of the cross section of the cylinder body of each engine cylinder is vertical to the arrangement direction of the six engine cylinders; the invention reduces the whole length of the engine, is convenient for the installation of the engine in the automobile, reserves larger space for a passenger compartment, and reduces the requirements of the in-line six-cylinder engine for the strength of the camshaft and the crankshaft of the automobile.)

1. The utility model provides a N prismatic engine cylinder, contains cylinder body and piston, and the piston is installed in the cylinder body, is equipped with the piston rod on the piston, and the cylinder bottom both sides of cylinder body are equipped with air inlet and gas vent respectively, are equipped with the (air) intake valve on the passageway of the inside intercommunication of air inlet and cylinder body, are equipped with the exhaust valve on the passageway of the inside intercommunication of gas vent and cylinder body, are equipped with spark plug, characterized by in the middle of the cylinder bottom of: the piston type piston cylinder is characterized in that the cylinder body is an N-prism-shaped cylinder body, the cross section of the cylinder body is a flattened N-edge, the transverse dimension of the N-edge is larger than the longitudinal dimension of the cylinder body, the inner side surface of the cylinder body is an N-prism surface matched with the appearance of the cylinder body, the piston is an N-prism-shaped piston matched with the inner side surface of the cylinder body, and M piston rings which are transversely arranged are sequentially arranged at a gap between the piston and the inner side surface of the cylinder body from; n is a natural number of 4 or more, and M is a natural number of 1 or more.

2. An N-prismatic engine cylinder according to claim 1, wherein: each piston ring comprises N sealing strips, the N sealing strips are respectively arranged in transversely arranged grooves on N side faces of the piston, each groove is a rectangular groove, each sealing strip is a rectangular sealing strip matched with the corresponding groove, one side of each sealing strip is located in each groove, the other side of each sealing strip is located outside each groove, the side face, located in each groove, of each sealing strip is an inner side face of each sealing strip, the inner side face of each sealing strip is arranged opposite to the bottom of each groove, a gap is formed between the inner side face of each sealing strip and the bottom of each groove, the side face, located outside each groove, of each sealing strip is an outer side face of each sealing strip, the outer side face of each sealing strip is in contact with the inner side face of each cylinder body, the N sealing strips are; the inner side surface of each sealing strip is provided with at least two protruding blocks, the protruding blocks are arranged in a row along the longitudinal direction of the sealing strip, a concave pit is arranged at the bottom of the groove and at the position corresponding to the protruding blocks, a spring is arranged in the concave pit, the protruding blocks are inserted into the concave pits, and the end parts of the protruding blocks support the spring in the concave pits, so that the spring is compressed.

3. An N-prismatic engine cylinder according to claim 2, wherein: n is the even number, and in the groove ring, the downside of all serial number for the even recess and the upside of all serial number for the odd recess lie in the coplanar, and N recess communicates each other.

4. An N-prismatic engine cylinder according to claim 3, wherein: and N is 4, 6 or 8.

5. An N-prismatic engine cylinder according to claim 1, wherein: when N is 4, the cross section of the cylinder body is rectangular, and the long side of the rectangle is larger than the wide side.

6. An N-prismatic engine cylinder according to claim 2, wherein: the inner side surface of the cylinder body is a rounded N-prism surface, and two ends of the outer side surface of the sealing strip are cylindrical surfaces matched with rounded corners on the inner side surface of the cylinder body.

7. An N-prismatic engine cylinder according to claim 2, wherein: the side wall of the cylinder body contains a hollow interlayer; the sealing strip is a metal sealing strip.

8. An N-prismatic engine cylinder according to claim 1, wherein: the transverse dimension of the N-shaped polygon is 1.5-4 times of the longitudinal dimension.

9. An N-prismatic engine cylinder according to claim 8, wherein: the lateral dimension of the N-gon is 3.14 times the longitudinal dimension.

10. An in-line six cylinder engine comprising the N-prismatic engine cylinder according to any one of claims 1 to 9, the six N-prismatic engine cylinders being disposed in the engine in a row, wherein: the transverse direction of the cross section of the cylinder body of each N prismatic engine cylinder is perpendicular to the arrangement direction of six N prismatic engine cylinders.

The technical field is as follows:

the invention relates to an engine cylinder and an engine, in particular to an N-prism engine cylinder and an inline six-cylinder engine.

(II) background art:

the engine of the automobile is divided into the following according to the cylinder arrangement type: the engine comprises an inline engine, a V-shaped engine, a W-shaped engine, a horizontal opposed engine and the like, and the inline engine and the V-shaped engine are common. The in-line engine is in a structure in which the engine is arranged in a straight line, generally is an in-line six-cylinder engine with stable operation, and is provided with six cylinders, the engine with the structure is simple in structure and low in manufacturing cost, all the cylinders are arranged on a straight line, only one cylinder cover and a group of double overhead camshafts for opening and closing the valves of the cylinders are needed, the output force is balanced in design, and the operation is stable. The V-type engine is most commonly arranged in a V-shaped included angle which is equivalent to two in-line 3 cylinders or more, is called as a V-type six-cylinder engine, needs two cylinder covers and two cam shafts for respectively driving two groups (3 cylinders in each group), has a complex structure and higher manufacturing cost, is not beneficial to maintenance and repair, and does not have the in-line six-cylinder engine to stably run.

However, the in-line six-cylinder engine has certain problems when installed in a car: because the existing cylinder is generally in a cylindrical structure, the area of the cross section of each cylinder cannot be smaller than a set value in order to ensure the displacement of the engine, when six cylindrical cylinders are arranged in a line, the length of the in-line six-cylinder engine is necessarily longer, and because of the limitation of automobile space, the in-line six-cylinder engine is very difficult to transversely install; when the inline six-cylinder engine is longitudinally installed, too much space which can be designed as a passenger compartment is occupied, and the competitiveness of the automobile in the market is reduced; moreover, the deflection generated by the longer camshaft and the crankshaft of the inline six-cylinder engine in the rotating process is larger, the requirements on the strength and the processing precision of the camshaft and the crankshaft are higher, and the manufacturing cost is increased; therefore, many automobile manufacturers have abandoned the use of in-line six-cylinder engines, and instead have adopted V-type six-cylinder engines, which have the advantages of small length, convenient installation, larger space for the passenger compartment, and low requirements for the strength of the camshaft and the crankshaft, but have complex structure and poor running stability, and cannot be regarded as a perfect substitute.

(III) the invention content:

the technical problem to be solved by the invention is as follows: when the N prism engine cylinder is applied to an in-line six-cylinder engine for an automobile, the whole length of the engine is reduced on the premise of ensuring that the area of the cross section of each cylinder meets the requirement, the engine is convenient to mount in the automobile, a larger space is reserved for a passenger compartment, the requirements of the in-line six-cylinder engine for the automobile on the strength of a camshaft and a crankshaft are reduced, and the cylinder is good in sealing property.

The technical scheme of the invention is as follows:

an N-prism-shaped engine cylinder comprises a cylinder body and a piston, wherein the piston is arranged in the cylinder body, a piston rod is arranged on the piston, an air inlet and an air outlet are respectively arranged on two sides of the bottom of the cylinder body, an air inlet valve is arranged on a channel communicated with the interior of the cylinder body, an exhaust valve is arranged on a channel communicated with the interior of the cylinder body, a spark plug is arranged in the middle of the bottom of the cylinder body, the cylinder body is an N-prism-shaped cylinder body, the cross section of the cylinder body is a flattened N-edge, the transverse dimension of the N-edge is larger than the longitudinal dimension, the inner side surface of the cylinder body is an N-prism-shaped surface matched with the appearance of the cylinder body, the piston is an N-prism-shaped piston matched with the; each piston ring comprises N sealing strips, the N sealing strips are respectively arranged in transversely arranged grooves on N side faces of the piston, each groove is a rectangular groove, each sealing strip is a rectangular sealing strip matched with the corresponding groove, one side of each sealing strip is located in each groove, the other side of each sealing strip is located outside each groove, the side face, located on one side of each sealing strip, located in each groove is an inner side face of each sealing strip, the inner side face of each sealing strip is arranged opposite to the groove bottom of each groove, a gap is formed between the inner side face of each sealing strip and the groove bottom of each groove, the side face, located on one side of each sealing strip, located outside each groove is an outer side face of each sealing strip, the outer side faces of the sealing strips are in contact with the inner side; the inner side surface of each sealing strip is provided with at least two convex blocks, the convex blocks are arranged in a row along the longitudinal direction of the sealing strip, a concave pit is arranged at the bottom of the groove and at a position corresponding to the convex blocks, a spring is arranged in the concave pit, the convex blocks are inserted into the concave pit, and the end parts of the convex blocks support the spring in the concave pit to compress the spring; n is a natural number of 4 or more, and M is a natural number of 1 or more.

N is an even number, in the groove ring, the lower side surfaces of all the grooves with the even numbers and the upper side surfaces of all the grooves with the odd numbers are positioned on the same plane, and the N grooves are communicated with each other.

N is 4, or 6, or 8.

When N is 4, the cross section of the cylinder body is rectangular, and the long side of the rectangle is larger than the wide side.

The inner side surface of the cylinder body is a rounded N-prism surface, and the two ends of the outer side surface of the sealing strip are cylindrical surfaces matched with rounded corners on the inner side surface of the cylinder body.

The side wall of the cylinder body contains a hollow interlayer. The hollow interlayer is filled with cooling liquid for cooling the cylinder.

The sealing strip is a metal sealing strip. The material of the sealing strip can be cast iron (gray cast iron), or alloy cast iron, or nodular cast iron, or vermicular cast iron, or malleable, semi-malleable cast iron, or steel, or metal ceramic.

The transverse dimension of the N-shaped polygon is 1.5-4 times of the longitudinal dimension.

Further, the lateral dimension of the N-gon is 3.14 times the longitudinal dimension.

The six N-prism engine cylinders are arranged in the engine in a row, the transverse direction of the cross section of the cylinder body of each N-prism engine cylinder is perpendicular to the arrangement direction of the six N-prism engine cylinders, and the intervals among the six N-prism engine cylinders are equal.

The invention has the beneficial effects that:

the N-prism engine cylinder adopts an N-prism cylinder body, the cross section of the cylinder body is a flattened N-edge shape, the inner side surface of the cylinder body is an N-prism surface matched with the appearance of the cylinder body, when the N-prism engine cylinder is applied to an in-line six-cylinder engine for an automobile, six cylinders can be arranged in a shorter line, on the premise that the area of the cross section of each cylinder meets the requirement, the overall length of the engine is reduced, the engine is convenient to install in the automobile, a larger space is reserved for a passenger compartment, the requirement on the strength of a camshaft and a crankshaft is reduced, and the in-line six-cylinder engine not only keeps the advantages of simple structure and stable operation, but also has the advantages of a V-type six-cylinder engine.

2. The piston ring in the N-prism engine cylinder comprises N sealing strips, wherein the N sealing strips are respectively arranged in transversely arranged grooves on N side surfaces of the piston, a spring is arranged in a concave pit at the bottom of the groove, and a convex block on the inner side surface of each sealing strip is inserted into the concave pit to prop against the spring, so that the sealing strips can be tightly contacted with the inner side surface of the cylinder body under the action of the spring, and the sealing performance is good.

3. M piston rings are arranged at a gap between the piston and the inner side face of the cylinder body in the N-prism engine cylinder from top to bottom, and the piston rings can form multiple protection, so that the sealing property of the cylinder is further enhanced.

(IV) description of the drawings:

FIG. 1 is one of the schematic views of an N-prism engine cylinder;

FIG. 2 is a schematic sectional view of an enlarged structure of A-A in FIG. 1;

FIG. 3 is an enlarged sectional view of B-B of FIG. 1;

FIG. 4 is a schematic view of the structure of all the sealing strips of each piston ring in FIG. 2;

FIG. 5 is an enlarged schematic view of the piston of FIG. 1;

FIG. 6 is a schematic diagram of the right side view of FIG. 5;

FIG. 7 is a schematic view of the structure of FIG. 5 with all seals and springs removed;

FIG. 8 is a schematic view of the arrangement of FIG. 6 with all seals and springs removed;

FIG. 9 is a second schematic block diagram of an N-prismatic engine cylinder;

fig. 10 is a schematic view of the structure of all the sealing strips of each piston ring in fig. 9;

FIG. 11 is a third schematic block diagram of an N-prismatic engine cylinder;

fig. 12 is a schematic view of the structure of all the sealing strips of each piston ring in fig. 11;

FIG. 13 is a graph comparing cylinder arrangement lengths using a cylindrical engine cylinder and a 4 prismatic engine cylinder.

(V) detailed embodiment: