SU916772A1 - Power plant - Google Patents

Description

The invention relates to the transport industry, in particular to the device combined turbopiston power plants of vehicles, and can be used in power plants drive non-propulsion power consumers, such as electric generators or pumps.

Known power plants containing the internal combustion engine and a power turbine associated with the power consumer and installed in the exhaust line of the engine, placed in the same line additional combustion chamber, a turbocharger with a turbine located on a common shaft and a compressor connected to the air receiver of the engine, and the body alternate overlap of the gas inlet pipes of the power turbine and the turbine of the turbocharger [1].

The use of a power turbine and an additional combustion chamber increases the unit power density. However, the traction characteristics of such an installation correspond to the characteristics of a piston engine, since the main power is transferred to the power consumer by this engine, and, moreover, the connection of the engine with pot2

power limit limits its forcing.

The purpose of the invention is to improve the traction characteristics by providing the ability to transfer all power to the consumer.

5 through a power turbine.

To achieve this goal, the turbocharger shaft is kinematically connected to the engine through a reducer, and an additional combustion chamber communicates with the compressor through a bypass pipe and the organ of alternately blocking the cross section of the pipe and the inlet of the receiver.

An additional combustion chamber can be installed between the engine and the organ by alternately shutting off the gas inlet, 5 turbine nozzles.

The turbocharger shaft can be made detachable to the turbine shaft and the compressor shaft, and a kinematic coupling reducer is installed between the compressor shaft and

²⁰ engine.

FIG. 1 shows a schematic diagram of the installation; in fig. 2 - the option of placing an additional combustion chamber in the exhaust line.

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916772

four

Engine 1 is equipped with an air receiver 2 and an exhaust line 3. The compressor 4 of the turbocharger is connected to the air receiver 2 of the engine, and the turbine 5 of the turbocharger is located in the exhaust line and is connected to an additional combustion chamber 6. The power consumer 7 is kinematically connected with the power turbine 8. The turbocharger shaft is provided with a clutch 9, which makes it disconnectable to the turbine shaft and the compressor shaft. A gearbox 10 is installed between the power consumer 7 and the power turbine 8. A gearbox 11 of a kinematic connection is installed between the breaking of compressor 4 and the engine 1. The body 12 alternately overlapping the inlet pipe of the turbine 5 of the turbocharger and the inlet pipe 13 is designed to alternately enable these turbines in the work. Additional combustion chamber 6 communicated through the bypass pipe 14 to the compressor. At the junction of this pipe with the receiver, the body 15 is installed overlapping the cross section of the pipe and the inlet of the receiver.

An additional combustion chamber can be installed between the engine and the body 12 by alternately shutting off the turbine gas inlets (Fig. 1) or between this organ and the gas inlet pipe of the turbine of the turbocompressor (Fig. 2).

To start the provided starter 16.

The installation works as follows.

Before starting with the unit inoperative, the clutch 9 is turned on, connecting the compressor 4 and the turbine 5 into a single system, and the organ 12 by turning off the turbine gas inlet pipes and the body 15 of the bypass tube and the inlet of the receiver are set to the positions shown in solid lines in FIG. 1, which provides unhindered passage of compressed air from the compressor 4 through the bypass pipe 14 and the combustion chamber 6 to the turbine 5. Starting is carried out by the starter 16, which spins the system: engine 1 - compressor 4 - turbine 5, until steady burning begins fuel in the combustion chamber 6. After turning off the starter 16, the system continues to spin up by the turbine 5 by increasing the fuel supply to the combustion chamber 6, as a result of which the pressure and temperature of the air compressor 4 is increased. At the time of reaching a temperature sufficient for self-ignition of the fuel after compression in engine 1, the clutch 9 is disconnected, separating the shafts of the compressor 4 and the turbine 5,

and organs 12 and 15 are set in the positions shown by the dotted line in FIG. 1 and 2. As a result of these switchings, the air flow from compressor 4 begins to flow into engine 1 through receiver 2 and further into power turbine 8 connected to power consumer 7, and turbine 5 gradually stops as the gas inlet into it is blocked. After starting the engine 1, the fuel supply to the chamber 6 is stopped and the internal combustion engine 1 starts to operate in a generating mode, transferring all the power to the compressor drive 4, and the useful power is removed from the shaft of the turbine 8.

This embodiment allows to increase the specific power of the engine and improve its traction characteristic, which is especially important for vehicles.

Claims (3)

Claim -one. A power plant containing an internal combustion engine and a power turbine connected to a power consumer and installed in the exhaust line of the engine, an additional combustion chamber located in the same line, a turbocharger with a turbine located on a common shaft and a compressor connected to the engine's air receiver, and alternate body the overlap of the gas inlet pipes of the power turbine of the turbocharger, characterized in that, in order to improve the traction characteristics by providing the possibility of transmission and all power to the consumer through the power turbine, the turbocharger shaft is kinematically connected to the engine through a reducer, and an additional combustion chamber communicates with the compressor through a bypass pipe and the organ of alternate overlap of the pipe section and the inlet of the receiver. 2. Installation by π. 1, characterized in that an additional combustion chamber is installed between the engine and the body alternately overlapping turbine gas inlets. 3. Installation on PP. 1 and 2, characterized in that the shaft of the turbocharger is made disconnectable to the turbine shaft and the compressor shaft, and a kinematic coupling reducer is installed between the compressor shaft and the engine.