CN201246214Y - Working substance increasing supercharged engine - Google Patents

Abstract

The utility model discloses a quality-improving and supercharging engine, which comprises an inlet duct (1), an exhaust duct (2), a cylinder cover cooling pressure-bearing cavity (4) and a cylinder sleeve cooling pressure-bearing cavity (5). A turbine supercharger (3) is arranged between the inlet duct (1) and the exhaust duct (2); a water storage tank (7) is communicated with the cylinder sleeve cooling pressure-bearing cavity (5) through a water pump (6); the cylinder sleeve cooling pressure-bearing cavity (5) is communicated with the cylinder cover cooling pressure-bearing cavity (4) through a passage (51); and the cylinder cover cooling pressure-bearing cavity (4) is communicated with the space between an exhaust valve (21) and an exhaust turbine (32) through a communicating pipe (8). The utility model can utilize the afterheat of an engine cooling system and the energy of an exhaust system at the same time to supercharge the inlet air of the engine, thereby increasing supercharging power to a large extent, reducing the fuel consumption of the engine, and reducing environmental pollution.

Description

supercharged engine

technical field

The utility model relates to the field of turbocharged engines.

Background technique

Traditional turbochargers only use part of the exhaust energy and do not use the waste heat of the engine cooling system. In order to further succinctly and effectively utilize the waste heat of the engine and reduce the fuel consumption of the engine, it is necessary to invent a supercharging system that can simultaneously utilize the waste heat of the engine exhaust and the cooling system, which is also the purpose of the utility model.

Contents of the invention

There may be many forms of engine waste heat utilization, but the simplest and most effective form is the turbocharging system. But the traditional turbocharging system can only use the energy of the engine exhaust but not the waste heat of the engine cooling system. The system disclosed by the utility model utilizes the waste heat and the exhaust energy of the engine cooling system simultaneously to greatly increase the supercharging power of the engine. Use the engine cooling system to obtain water vapor with considerable pressure and temperature, and introduce this water vapor into the pipeline between the engine exhaust valve and the exhaust turbine, thereby increasing the quality of the working fluid that drives the exhaust turbine to increase the power of the exhaust turbine the goal of.

The moisture-rich exhaust gas passing through the exhaust turbine can be cooled to condense part of the water vapor, and then a part of the water can be recovered through the gas-liquid separator to replenish the water storage tank to reduce the amount of water on the vehicle. The water volume of the engine cooling system will decrease due to evaporation, so it needs to be replenished from the water storage tank through the water pump.

The temperature of the cylinder liner cooling pressurized chamber should be controlled lower than the temperature of the cylinder head cooling pressurized chamber, so as to generate steam with a higher temperature as much as possible under the premise of meeting the requirements of the engine working conditions.

Sensors can be set at multiple operating points to obtain information such as temperature and pressure, and the flow can be controlled accordingly to achieve the purpose of ensuring the normal operation of the engine and generating as much steam with higher temperature and pressure as possible. It is possible to recycle as much water as possible.

In order to ensure a good working condition between the cylinder liner and the piston, the cooling and pressure-bearing chamber of the cylinder liner should be kept at a relatively low temperature, so more low-grade waste heat should be generated. If this low-grade waste heat is not discharged from the system, it will be possible The mass imbalance of the working fluid flowing through the cylinder liner cooling and pressure-bearing cavity and the cylinder head cooling and pressure-bearing cavity is caused, so that the system cannot work. Therefore, in some cases, another heat dissipation system needs to be provided to additionally cool the water in the cylinder liner cooling pressurized chamber.

The utility model discloses a mass-increasing supercharged engine, which comprises an air intake passage, an exhaust passage, a cylinder head cooling pressure-bearing cavity, and a cylinder liner cooling pressure-bearing cavity. The purpose is to achieve the following:

A turbocharger is arranged between the air intake passage and the exhaust passage, the water storage tank communicates with the cylinder liner cooling pressure-bearing cavity through a water pump, and the cylinder liner cooling pressure-bearing cavity communicates with the cylinder liner cooling pressure-bearing cavity through a channel. The cooling and pressure-bearing cavity of the cylinder head communicates with the space between the exhaust valve and the exhaust turbine through the communication pipe.

The connecting pipe is provided with a control valve.

A flow control valve is provided at the outlet of the water pump.

A cooling condenser is provided on the exhaust channel, the cooling condenser communicates with the gas-liquid separator, and the liquid phase outlet of the gas-liquid separator communicates with the water storage tank.

The communication pipe is set to communicate with the gas-liquid separator.

The lower end of the cylinder liner cooling pressure-bearing cavity communicates with the inlet of the pressure-bearing radiator through the heat dissipation water pump, and the outlet of the pressure-bearing radiator communicates with the upper end of the cylinder liner cooling pressure-bearing cavity.

The utility model has the following positive and beneficial effects: the utility model can simultaneously utilize the waste heat of the engine cooling system and the exhaust energy of the engine, thereby improving the thermal efficiency of the engine, reducing fuel consumption, and reducing the use cost of the engine.

Description of drawings

Fig. 1 is the structural composition schematic diagram of the utility model embodiment one

Fig. 2 is the structural composition schematic diagram of the utility model embodiment two

Fig. 3 is the structural composition schematic diagram of the utility model embodiment three

Fig. 4 is the structural composition schematic diagram of the utility model embodiment four

Fig. 5 is a schematic diagram of the structure and composition of the fifth embodiment of the utility model

Detailed ways

Figure number

1. Intake port 2. Exhaust port 3. Turbocharger

4. Cylinder head cooling and pressure chamber 5. Cylinder liner cooling and pressure chamber 6. Water pump

7. Water storage tank 71. Gas-liquid separator 51. Channel 21. Exhaust valve

32. Exhaust turbine 81. Control valve 61. Flow control valve 66. Cooling water pump

22. Cooling condenser 88. Connected gas-liquid separator 44. Pressurized radiator

Please refer to the supercharged engine shown in Figure 1, which includes an intake port 1, an exhaust port 2, a cylinder head cooling pressure chamber 4, and a cylinder liner cooling pressure chamber 5. A turbocharger 3 is provided between the exhaust channels 2, and the water storage tank 7 communicates with the cylinder liner cooling pressure-bearing cavity 5 through a water pump 6, and the cylinder liner cooling pressure-bearing cavity 5 communicates with the cylinder liner cooling pressure-bearing cavity 5 through a channel 51. The cylinder head cooling and pressure receiving chamber 4 communicates with the space between the exhaust valve 21 and the exhaust turbine 32 through the communication pipe 8 .

Referring to the supercharged engine shown in FIG. 2 , the communication pipe 8 is provided with a control valve 81 .

Referring to the supercharged engine shown in FIG. 3 , the outlet of the water pump 6 is provided with a flow control valve 61 .

Please refer to the supercharged engine shown in Figure 4, on the exhaust passage 2 is provided with a cooling condenser 22, the cooling condenser 22 communicates with the gas-liquid separator 71, the gas-liquid separator 71 The liquid phase outlet communicates with the water storage tank 7 .

Please refer to the mass-increased supercharged engine shown in Figure 5, the connecting pipe 8 is set to communicate with the gas-liquid separator 88, and the lower end of the cylinder liner cooling pressure-bearing cavity 5 passes through the cooling water pump 66 and the pressure-bearing radiator 44. The inlet is communicated, and the outlet of the pressurized radiator 44 is communicated with the upper end of the cylinder liner cooling pressurized cavity 5 .

Claims (6)

1. quality improving and pressurizing engine, comprise intake duct (1), air outlet flue (2), cylinder cap cooling pressure-bearing cavity (4), cylinder sleeve cooling pressure-bearing cavity (5), it is characterized in that: between described intake duct (1) and described air outlet flue (2), establish turbosupercharger (3), water storage tank (7) is communicated with described cylinder sleeve cooling pressure-bearing cavity (5) through water pump (6), described cylinder sleeve cooling pressure-bearing cavity (5) is communicated with described cylinder cap cooling pressure-bearing cavity (4) through passage (51), the spatial communication of described cylinder cap cooling pressure-bearing cavity (4) between connecting tube (8) and exhaust valve (21) and exhaust driven gas turbine (32).

2. quality improving and pressurizing engine as claimed in claim 1 is characterized in that: described connecting tube (8) is provided with control valve (81).

3. quality improving and pressurizing engine as claimed in claim 1 is characterized in that: the outlet port of described water pump (6) is provided with flow control valve (61).

4. quality improving and pressurizing engine as claimed in claim 1, it is characterized in that: on described air outlet flue (2), be provided with cooler condenser (22), described cooler condenser (22) is communicated with gas-liquid separator (71), and the liquid phase outlet of described gas-liquid separator (71) is communicated with described water storage tank (7).

5. quality improving and pressurizing engine as claimed in claim 1 is characterized in that: be made as connection gas-liquid separator (88) described connecting tube (8).

6. quality improving and pressurizing engine as claimed in claim 1, it is characterized in that: the lower end of described cylinder sleeve cooling pressure-bearing cavity (5) is communicated with the inlet of pressure-bearing radiator (44) through heat radiation water pump (66), and the outlet of described pressure-bearing radiator (44) is communicated with the upper end of described cylinder sleeve cooling pressure-bearing cavity (5).

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