CN2466360Y - Adiabatic internal combustion engine - Google Patents

Abstract

The utility model relates to a heat-insulating combustion engine, which comprises a gas cylinder, a gas cylinder cover, a piston, a connecting rod, a crankshaft, a gas valve, a spark plug, an oil sprayer, and an oil supply pump, wherein, one side of the gas cylinder is provided with a subsidiary gas cylinder side by side; the inside of the subsidiary gas cylinder is provided with a subsidiary piston, a subsidiary crank shaft, and a subsidiary connecting rod; the crankshaft and the subsidiary crankshaft are connected with each other and are synchronously in operation; the piston and the subsidiary piston can be driven to carry out the synchronous operation towards upper dead points and lower dead points in the gas cylinder and the subsidiary gas cylinder by the connecting rod and the subsidiary connecting rod; the inside of the gas cylinder cover is provided with a passage. Because the compression ratio in the gas cylinder and in the subsidiary gas cylinder is different, the generated compression swirls are different. The utility model is suitable for two-stroke combustion engines and four-stroke combustion engines of gasoline engines, diesel engines, gas engines, etc. and particularly pressure increasing way combustion engines.

Description

Adiabatic internal combustion engine

The utility model relates to an internal combustion engine, in particular to an adiabatic internal combustion engine.

The currently developed adiabatic internal combustion engine (diesel engine) is still traditionally based on one cylinder as a working unit. There are four major problems in it: 1. The heat load of the current adiabatic engine is quite large, so that the reliability of the material is poor , the exhaust temperature is too high, the cylinder wall temperature is too high, which will affect the charging, and the compressed gas temperature is too high, which will deteriorate the combustion; 2. The current developed adiabatic diesel engine is a constant volume and constant pressure mixed heating cycle like the traditional cooling diesel engine. The thermal efficiency is not high; 3. Due to the limitations of the heating cycle and structure, the heat release rate is not reasonable, and most of the heat release peak is in the process of the piston moving down, and the work used is small; if most of the heat energy is at the top dead center of the piston When it is released, it will cause the pressure to be too high and cause a cylinder knocking accident; 4. When the current adiabatic machine utilizes the energy in the exhaust gas, it is recovered by the power turbine, and the utilization efficiency is too low and the cost is too high.

The purpose of this utility model is to propose an adiabatic internal combustion engine which can solve the above problems. The purpose of this utility model is achieved like this: a kind of insulation internal combustion engine, comprises cylinder, cylinder head, piston, connecting rod, crankshaft, valve, spark plug, fuel injector and oil supply pump, and cylinder head is covered on cylinder sealingly, and piston is arranged In the cylinder, the crankshaft is connected to the piston through the connecting rod, the cylinder head is provided with a valve, and an auxiliary cylinder is arranged in parallel on one side of the cylinder, and the auxiliary piston, auxiliary crankshaft and auxiliary connecting rod are arranged in the auxiliary cylinder, and the crankshaft is connected to the auxiliary crankshaft And work synchronously, through the connecting rod and the auxiliary connecting rod, the piston and the auxiliary piston are driven to work synchronously at the upper dead center and the lower dead center of the cylinder and the auxiliary cylinder. There is a channel in the cylinder head. A compression vortex is generated, and the cylinder, auxiliary cylinder, cylinder head, piston, auxiliary piston, and valve are made of heat-insulating materials.

The utility model has the advantages that it is suitable for two-stroke and four-stroke internal combustion engines such as gasoline engines, diesel engines, and gas engines, and is more suitable for supercharged internal combustion engines. progress; in addition, the compression ratio of the adiabatic gasoline engine can be appropriately increased, and the thermal efficiency will be greatly increased because there is a large enough combustion chamber space without considering deflagration and knocking vibration.

Embodiments of the utility model are described in further detail below in conjunction with the accompanying drawings:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a schematic structural view of the cylinder head of the utility model;

Fig. 4 is the A-A sectional view of Fig. 3;

FIG. 5 is a cross-sectional view of the multiple channels in the cylinder head of FIG. 3 .

The insulated internal combustion engine shown in Figure 1-5 includes a cylinder 1, a cylinder head 2, a piston 3, a connecting rod 4, a crankshaft 5, a valve 6, a spark plug 7, a fuel injector 8 and an oil supply pump 9, and the cylinder head 2 is hermetically sealed. On the cylinder 1, the piston 3 is set in the cylinder 1, the crankshaft 5 is connected with the piston 3 through the connecting rod 4, the cylinder head 2 is provided with a valve 6, and an auxiliary cylinder 11 is arranged side by side on the side of the cylinder 1, inside the auxiliary cylinder 11 An auxiliary piston 13, an auxiliary crankshaft 15 and an auxiliary connecting rod 14 are provided, and the crankshaft 5 and the auxiliary crankshaft 15 are connected as one and work synchronously. The upper dead center and the lower dead center in 11 work synchronously. There is a channel 10 in the cylinder head 2. Due to the difference in the compression ratio in the cylinder 1 and the auxiliary cylinder 11, a compression vortex is generated. The cylinder 1, the auxiliary cylinder 11, the cylinder head 2, and the piston 3. Auxiliary piston 13 and valve 6 are made of heat insulating material. Cylinder 1 and auxiliary cylinder 11 are parallel, and piston 3 and auxiliary piston 13 in cylinder 1 and auxiliary cylinder 11 work synchronously. Cylinder 1 is the main combustion cylinder, and auxiliary cylinder 11 is the auxiliary combustion cylinder. The combustion cylinder is large, and it can also be made the same size; as shown in Figure 1, the piston 3 and the auxiliary piston 13 are simultaneously inhaled and compressed by the crankshaft 5, the auxiliary crankshaft 15, the connecting rod 4, and the auxiliary connecting rod 14 simultaneously. The compression ratio is larger than that in the main combustion cylinder, and the pressure is also greater than that in the main combustion cylinder, so a part of the air in the auxiliary combustion cylinder enters the main combustion cylinder through the channel 10, forming multiple strong compression vortices, when the piston 3 is compressed to Near the top dead center, at the fuel injection advance angle, as shown in Figure 2, the fuel injector 8 starts to inject fuel, and forms a mixture of oil and gas in the main combustion cylinder, and when the crankshaft 5 rotates through the fuel injection advance angle to the ignition advance At the same time, as shown in Figures 1 and 3, the four spark plugs 7 start to ignite simultaneously, forming rapid sequential combustion in the main combustion cylinder. At this time, the gas pressure in the main combustion cylinder rises rapidly, and the high-pressure gas passes through multiple channels 10 in a pulsed manner. Entering the auxiliary combustion cylinder, punching a part of the air in the auxiliary combustion cylinder into the main combustion cylinder, and forming a strong vortex in the two cylinders, promoting heat mixing, promoting rapid combustion of fuel and distributing heat energy in the two cylinders, with a large expansion ratio increase, the thermal efficiency is greatly increased, and the thermal load of the adiabatic machine is also greatly reduced, and the reliability and life are also improved. Although the average effective pressure in the two cylinders has dropped a little, the working area has doubled. , the torque is generally increased. The heat release form of this adiabatic machine is that the heat is released almost at once when the piston is compressed at the top dead center, which is similar to a constant volume heating cycle. Because there are two combustion chambers, so Excessive pressure will not be generated, and the temperature is relatively low. Carbon particles, HC, NO, NO _x and other emissions are quite low. The air excess coefficient in the main combustion cylinder is based on the air excess coefficient suitable for rapid combustion of gasoline and diesel. definite. The combustion principle of this adiabatic machine is: the mixture gas is ignited as quickly as possible in the main combustion chamber (open type), and burns sequentially (the mixture gas near the channel opening is burned first), and then enters the secondary combustion chamber through the channel after combustion is completed (open type). formula), if a small part of the unburned mixture enters the secondary combustion chamber, it will be ignited again by the two spark plugs in the secondary combustion chamber to continue combustion.

Claims (2)

1, a kind of adiabatic internal-combustion engine, comprise cylinder (1), cylinder head (2), piston (3), connecting rod (4), bent axle (5), valve (6), spark plug (7), oil sprayer (8) and oil feed pump (9), cylinder head (2) is covered hermetically on cylinder (1), piston (3) is arranged in the cylinder (1), bent axle (5) links to each other with piston (3) by connecting rod (4), cylinder head (2) is provided with valve (6), it is characterized in that: be set side by side with an auxilliary cylinder (11) in cylinder (1) one side, be provided with auxilliary piston (13) in the auxilliary cylinder (11), auxilliary bent axle (15) and auxilliary connecting rod (14), bent axle (5) links to each other with auxilliary bent axle (15) and synchronous working, driving piston (3) and auxilliary piston (13) by connecting rod (4) and auxilliary connecting rod (14) synchronouss working to top dead center and lower dead center in cylinder (1) and auxilliary cylinder (11), be provided with passage (10) in the cylinder head (2), owing to cylinder (1) and the interior different compression swirls that produce of compression ratio of auxilliary cylinder (11).

2, adiabatic internal-combustion engine according to claim 1 is characterized in that: described cylinder (1), auxilliary cylinder (11), cylinder head (2), piston (3), auxilliary piston (13), valve (6) are made by thermoinsulation material.

Images