CN102678266A - Intake system-connected mechanical supercharged four-stroke internal combustion engine - Google Patents

Abstract

A supercharged four-stroke internal combustion engine with an intake system connected to the technical field of internal combustion engines, comprising: a cylinder, a piston, a connecting rod, an intake mechanism, an intake valve, an exhaust mechanism, an exhaust valve, a connecting pipe, and a crankshaft. The two ends of the three connecting pipes are respectively connected with the second air inlet mechanism and the fourth exhaust mechanism, the two ends of the first connecting pipe are respectively connected with the first air inlet mechanism and the third connecting pipe, and the two ends of the second connecting pipe are respectively connected with the first air inlet mechanism and the third connecting pipe. The ends are respectively connected with the third exhaust mechanism and the third connecting pipe. During the working process, the third piston and the fourth piston can use the mechanical energy of the first piston and the second piston through the crankshaft linkage mechanism; by controlling the timing of the intake valve and the exhaust valve, the third cylinder, the fourth piston, etc. The cylinder pressurizes the air it inhales, so that the first cylinder and the second cylinder inhale more air, increasing the effective power of the engine. The invention has reasonable design and simple structure, and is suitable for a mechanical supercharging device of a four-stroke engine.

Description

Intake system connected supercharged four-stroke internal combustion engine

technical field

The invention relates to a supercharging device in the technical field of internal combustion engines, in particular to a supercharged four-stroke internal combustion engine connected to an intake system of a four-stroke engine.

Background technique

With the development of modern society, people have higher and higher requirements on the power and economy of the engine. In the case of a certain displacement, the most effective way to increase the output power of the engine is to provide more fuel for combustion. It is easy to provide more fuel to the cylinder through the injector, but it is not so easy to provide the amount of air to match the increased amount of fuel at the same time; The effect is poor. When the fuel injection volume is constant and the cylinder air intake volume is large, the combustion is better, and the fuel consumption and emissions are lower. The traditional naturally aspirated engine completely relies on the vacuum formed in the cylinder to inhale air when the piston moves down. This traditional method is difficult to provide a sufficient amount of air to support the complete combustion of fuel. Therefore, in order to provide enough air for the combustion of the engine to make the engine more dynamic and economical, supercharging technology plays a very important role. But the transient performance of the existing exhaust gas turbocharging system is poor.

After searching the existing technical documents, it was found that Chinese patent application number 200610008721.2, patent name: an invention patent of a mechanical supercharging device and its realization method, the patented technology provides a mechanical supercharging device, which is driven by a crankshaft Compressor is used to supercharge the engine; however, this technology cannot better solve the problem of crankshaft force balance of one-cylinder or two-cylinder engines, nor can it realize the adjustment of the engine air intake system.

Contents of the invention

The present invention aims at the deficiencies of the above-mentioned prior art, and provides a supercharged four-stroke internal combustion engine with an intake system connected, which can better solve the force balance problem of the crankshaft of a one-cylinder or two-cylinder engine.

The present invention is achieved through the following technical solutions, the present invention includes: the first cylinder, the first piston, the first connecting rod, the first intake mechanism, the first intake valve, the first exhaust mechanism, the first exhaust Valve, first exhaust pipe, first injector, second cylinder, second piston, second connecting rod, second intake mechanism, second intake valve, second exhaust mechanism, second exhaust valve , the second exhaust pipe, the second fuel injector, the crankshaft, the first connecting pipe, the second connecting pipe, the third cylinder, the third piston, the third connecting rod, the third intake mechanism, the third intake valve, The first intake pipe, the third exhaust mechanism, the third exhaust valve, the fourth cylinder, the fourth piston, the fourth connecting rod, the fourth intake mechanism, the fourth intake valve, the second intake pipe, the fourth row The air mechanism, the fourth exhaust valve and the third connecting pipe, the first piston is installed in the first cylinder, the first air intake mechanism, the first exhaust mechanism, and the first fuel injector are all installed on the top of the first cylinder, The first intake valve is installed in the first intake mechanism, the first exhaust valve is installed in the first exhaust mechanism, the first exhaust pipe is connected with the first exhaust mechanism, and the second piston is installed in the second cylinder Inside, the second intake mechanism, the second exhaust mechanism, and the second fuel injector are installed on the top of the second cylinder, the second intake valve is installed in the second intake mechanism, and the second exhaust valve is installed on the In the second exhaust mechanism, the second exhaust pipe is connected with the second exhaust mechanism, the third piston is installed in the third cylinder, the third intake mechanism and the third exhaust mechanism are installed on the top of the third cylinder, The third intake valve is installed in the third intake mechanism, the third exhaust valve is installed in the third exhaust mechanism, the first intake pipe is connected with the third intake mechanism, and the fourth piston is installed in the fourth cylinder , the fourth intake mechanism and the fourth exhaust mechanism are installed on the top of the fourth cylinder, the fourth intake valve is installed in the fourth intake mechanism, the fourth exhaust valve is installed in the fourth exhaust mechanism, the fourth The second air intake pipe is connected with the fourth air intake mechanism, the two ends of the third connecting pipe are respectively connected with the second air intake mechanism and the fourth exhaust mechanism, and the two ends of the first connecting pipe are respectively connected with the first air intake mechanism, The third connecting pipe is connected, the two ends of the second connecting pipe are respectively connected with the third exhaust mechanism and the third connecting pipe, the two ends of the first connecting rod are respectively connected with the crankshaft and the first piston, and the second connecting rod The two ends of the connecting rod are respectively connected with the crankshaft and the second piston, the two ends of the third connecting rod are respectively connected with the crankshaft and the third piston, and the two ends of the fourth connecting rod are respectively connected with the crankshaft and the fourth piston.

Further, the present invention also includes a first spark plug and a second spark plug, the first spark plug is installed on the top of the first cylinder, and the second spark plug is installed on the top of the second cylinder. In the present invention, the third intake valve, the third exhaust valve, the fourth intake valve and the fourth exhaust valve are all reed valves or electric control valves.

In the present invention, the four intake valves and the four exhaust valves can be controlled by mechanical mechanism or electric control mechanism. In the course of work of the present invention, the 3rd piston, the 4th piston can utilize the mechanical energy of the first piston, the 2nd piston by crankshaft linkage; By controlling the timing of four intake valves and four exhaust valves, can Use the third piston and the fourth piston to pressurize the air inhaled by the third cylinder and the fourth cylinder respectively, so that the first cylinder and the second cylinder can inhale more air and improve the effective power of the engine; when the first cylinder, When the second cylinder does not need to be boosted, the control structure can be used to keep the third intake valve, the third exhaust valve, the fourth intake valve, and the fourth exhaust valve in an open state all the time, so that the first cylinder, The second cylinder takes in less air.

Compared with the prior art, the present invention has the following beneficial effects: the present invention can realize the supercharging of the engine and the non-supercharging of the engine by controlling the engine system; the present invention adopts a symmetrical piston arrangement structure, The problem of force balance of the crankshaft can be better solved; the invention can be applied to diesel engines or gasoline engines.

Description of drawings

Fig. 1 is the structural representation of the air intake system connected type supercharged four-stroke internal combustion engine of the present invention;

Among them: 1. The first cylinder, 2. The first piston, 3. The first connecting rod, 4. The first intake mechanism, 5. The first intake valve, 6. The first exhaust mechanism, 7. The first row Air valve, 8, the first exhaust pipe, 9, the first fuel injector, 10, the second cylinder, 11, the second piston, 12, the second connecting rod, 13, the second intake mechanism, 14, the second Intake valve, 15, second exhaust mechanism, 16, second exhaust valve, 17, second exhaust pipe, 18, second fuel injector, 19, crankshaft, 20, first connecting pipe, 21, the first Two connecting pipes, 22, the third cylinder, 23, the third piston, 24, the third connecting rod, 25, the third intake mechanism, 26, the third intake valve, 27, the first intake pipe, 28, the third Exhaust mechanism, 29, the third exhaust valve, 30, the fourth cylinder, 31, the fourth piston, 32, the fourth connecting rod, 33, the fourth intake mechanism, 34, the fourth intake valve, 35, the fourth Two intake pipes, 36, the fourth exhaust mechanism, 37, the fourth exhaust valve, 38, the third connecting pipe, 39, the first spark plug, 40, the second spark plug.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

As shown in Figure 1, the present invention includes: a first cylinder 1, a first piston 2, a first connecting rod 3, a first intake mechanism 4, a first intake valve 5, a first exhaust mechanism 6, a first row Air valve 7, first exhaust pipe 8, first fuel injector 9, second cylinder 10, second piston 11, second connecting rod 12, second intake mechanism 13, second intake valve 14, second Exhaust mechanism 15, second exhaust valve 16, second exhaust pipe 17, second injector 18, crankshaft 19, first connecting pipe 20, second connecting pipe 21, third cylinder 22, third piston 23 , the third connecting rod 24, the third intake mechanism 25, the third intake valve 26, the first intake pipe 27, the third exhaust mechanism 28, the third exhaust valve 29, the fourth cylinder 30, the fourth piston 31 , the fourth connecting rod 32, the fourth intake mechanism 33, the fourth intake valve 34, the second intake pipe 35, the fourth exhaust mechanism 36, the fourth exhaust valve 37, the third connecting pipe 38, the first spark plug 39 and the second spark plug 40, the first piston 2 is installed in the first cylinder 1, the first intake mechanism 4, the first exhaust mechanism 6, and the first fuel injector 9 are all installed on the top of the first cylinder 1, and the first An intake valve 5 is installed in the first intake mechanism 4, the first exhaust valve 7 is installed in the first exhaust mechanism 6, the first exhaust pipe 8 is connected with the first exhaust mechanism 6, and the second piston 11 is installed in the second cylinder 10, the second intake mechanism 13, the second exhaust mechanism 15, and the second fuel injector 18 are all installed on the top of the second cylinder 10, and the second intake valve 14 is installed on the second inlet In the air mechanism 13, the second exhaust valve 16 is installed in the second exhaust mechanism 15, the second exhaust pipe 17 is connected with the second exhaust mechanism 15, the third piston 23 is installed in the third cylinder 22, and the second exhaust pipe 17 is installed in the third cylinder 22. The three intake mechanism 25 and the third exhaust mechanism 28 are installed on the top of the third cylinder 22, the third intake valve 26 is installed in the third intake mechanism 25, and the third exhaust valve 29 is installed in the third exhaust valve. In the mechanism 28, the first intake pipe 27 is connected with the third intake mechanism 25, the fourth piston 31 is installed in the fourth cylinder 30, the fourth intake mechanism 33 and the fourth exhaust mechanism 36 are installed in the fourth cylinder 30, the fourth intake valve 34 is installed in the fourth intake mechanism 33, the fourth exhaust valve 37 is installed in the fourth exhaust mechanism 36, and the second intake pipe 35 is connected with the fourth intake mechanism 33 , the two ends of the third connection pipe 38 are respectively connected with the second air intake mechanism 13 and the fourth exhaust mechanism 36, and the two ends of the first connection pipe 20 are respectively connected with the first air intake mechanism 4 and the third connection pipe 38. The two ends of the second connecting pipe 21 are respectively connected with the third exhaust mechanism 28 and the third connecting pipe 38, the two ends of the first connecting rod 3 are respectively connected with the crankshaft 19 and the first piston 2, and the second connecting rod 3 is connected with the crankshaft 19 and the first piston 2 respectively. The two ends of the rod 12 are connected with the crankshaft 19 and the second piston 11 respectively, the two ends of the third connecting rod 24 are respectively connected with the crankshaft 19 and the third piston 23, and the two ends of the fourth connecting rod 32 are respectively connected with the crankshaft 19, The fourth piston 31 is connected, the first spark plug 39 is installed on the top of the first cylinder 1, the second spark plug 40 is installed on the top of the second cylinder 10, the third intake air The valve 26, the third exhaust valve 29, the fourth intake valve 34, and the fourth exhaust valve 37 are all reed valves or electric control valves.

In the course of work of the present invention, the 3rd piston 23, the 4th piston 31 can utilize the mechanical energy of the first piston 2, the second piston 11 by crankshaft linkage; Timing, the third piston 23 and the fourth piston 31 can be used to pressurize the air inhaled by the third cylinder 22 and the fourth cylinder 30 respectively, so that the first cylinder 1 and the second cylinder 10 can inhale more air and improve The effective power of the engine; when the first cylinder 1 and the second cylinder 10 do not need supercharging, the control structure can be used to make the third intake valve 26, the third exhaust valve 29, the fourth intake valve 34, the fourth intake valve The exhaust valve 37 is always in an open state, so that the first cylinder 1 and the second cylinder 10 suck less air.

Claims (3)

1. gas handling system connecting type engine driven supercharging quartastroke engine; Comprise first cylinder (1), first piston (2), first connecting rod (3), first admission gear (4), first suction valve (5), first exhaust gear (6), first outlet valve (7), downtake pipe (8), first oil sprayer (9), second cylinder (10), second piston (11), second connecting rod (12), second admission gear (13), second suction valve (14), second exhaust gear (15), second outlet valve (16), second exhaust pipe (17) and second oil sprayer (18); First piston (2) is installed in first cylinder (1); First admission gear (4), first exhaust gear (6), first oil sprayer (9) are installed in the top of first cylinder (1); First suction valve (5) is installed in first admission gear (4); First outlet valve (7) is installed in first exhaust gear (6); Downtake pipe (8) is connected with first exhaust gear (6); Second piston (11) is installed in second cylinder (10), and second admission gear (13), second exhaust gear (15), second oil sprayer (18) are installed in the top of second cylinder (10), and second suction valve (14) is installed in second admission gear (13); Second outlet valve (16) is installed in second exhaust gear (15); Second exhaust pipe (17) is connected with second exhaust gear (15), it is characterized in that also comprising bent axle (19), first connecting tube (20), second connecting tube (21), the 3rd cylinder (22), the 3rd piston (23), third connecting rod (24), the 3rd admission gear (25), the 3rd suction valve (26), first suction tude (27), the 3rd exhaust gear (28), the 3rd outlet valve (29), four-cylinder (30), the 4th piston (31), the 4th connecting rod (32), the 4th admission gear (33), the 4th suction valve (34), second suction tude (35), the 4th exhaust gear (36), the 4th outlet valve (37) and the 3rd connecting tube (38), and the 3rd piston (23) is installed in the 3rd cylinder (22); The 3rd admission gear (25), the 3rd exhaust gear (28) are installed in the top of the 3rd cylinder (22); The 3rd suction valve (26) is installed in the 3rd admission gear (25), and the 3rd outlet valve (29) is installed in the 3rd exhaust gear (28), and first suction tude (27) is connected with the 3rd admission gear (25); The 4th piston (31) is installed in the four-cylinder (30); The 4th admission gear (33), the 4th exhaust gear (36) are installed in the top of four-cylinder (30), and the 4th suction valve (34) is installed in the 4th admission gear (33), and the 4th outlet valve (37) is installed in the 4th exhaust gear (36); Second suction tude (35) is connected with the 4th admission gear (33); The two ends of the 3rd connecting tube (38) are connected with second admission gear (13), the 4th exhaust gear (36) respectively, and the two ends of first connecting tube (20) are connected with first admission gear (4), the 3rd connecting tube (38) respectively, and the two ends of second connecting tube (21) are connected with the 3rd exhaust gear (28), the 3rd connecting tube (38) respectively; The two ends of first connecting rod (3) are connected with bent axle (19), first piston (2) respectively; The two ends of second connecting rod (12) are connected with bent axle (19), second piston (11) respectively, and the two ends of third connecting rod (24) are connected with bent axle (19), the 3rd piston (23) respectively, and the two ends of the 4th connecting rod (32) are connected with bent axle (19), the 4th piston (31) respectively.

2. gas handling system connecting type engine driven supercharging quartastroke engine according to claim 1; It is characterized in that also comprising first spark plug (39) and second spark plug (40); First spark plug (39) is installed in the top of first cylinder (1), and second spark plug (40) is installed in the top of second cylinder (10).

3. gas handling system connecting type engine driven supercharging quartastroke engine according to claim 1 is characterized in that said the 3rd suction valve (26), the 3rd outlet valve (29), the 4th suction valve (34), the 4th outlet valve (37) are leaf valve or electrically-controlled valve.