RU27163U1 - TURBOCHARGED INTERNAL COMBUSTION ENGINE AND SUPPLY AIR COOLING SYSTEM - Google Patents

Description

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Turbocharged internal combustion engine with charge air cooling system.

The utility model relates to transport engineering, in particular to engine building and can be used in the design of turbocharged engines with intermediate cooling of charge air.

There is a design of an internal combustion engine with intermediate cooling of the charge air, in which the charge air exhaust pipes are located above the left and right intake manifolds, and the cooling sections are combined by a common collecting manifold and have separate distributing manifolds, each of which is connected to a turbocompressor of the corresponding row of cylinders. In addition, each turbocharger is connected to its intake manifolds via an overflow valve. (See RF patent No. 20838556 F02B 29/04),

The design has the following disadvantages: large axial and radial dimensions, which complicates the placement of the engine in the engine compartment of the vehicle.

As a prototype, in combination of essential features, the design of an internal combustion engine with a V-shaped arrangement of cylinders closest to the claimed technical solution has been adopted. Each row of engine cylinders is equipped with a turbocharger located on the flywheel side. In addition, the engine has a charge air cooling system, which includes: a charge air path equipped with a tee and consisting of an intake manifold, inlet and outlet pipelines and a charge air cooler, the inlet and outlet of which are in communication with turbochargers and with the engine intake manifolds, respectively. A pipe connecting the intake manifolds in the area of the flywheel housing provides pressure equalization in the intake manifolds. (See Utility Model No. 14605 of January 25, 2000.).

This design has drawbacks - significant axial dimensions, which makes it difficult to place the engine, for example, in the engine compartment of the bus.

The task was set: to improve the design in order to reduce the axial dimensions of the engine.

The problem is solved due to the fact that in the internal combustion engine equipped with a turbocharger and charge air cooling system, turbochargers are installed in the front of the engine at different heights, and the tee for supplying air to the turbochargers is asymmetrical and is attached to the front end of the cylinder block by threaded elements through the body water channels. In addition, the air supply tee additionally performs the function of a power element for fastening the electric generator and the belt drive bypass rollers.

As a result of the analysis of the prior art for patents and other sources of scientific and technical information, no analogue was found matching the claimed technical solution for the entire set of essential features. Therefore, the proposal meets the criterion of "novelty.

The proposed technical solution is illustrated by drawings, where:

FIG. 1 - engine, front view;

FIG. 2 - same, left view;

FIG. 3 - same, right view; FIG. 4 - same, top view;

The inventive engine comprises a cylinder block 1, on each half block of which separate heads of 2 cylinders are installed. The housing 3 of the water channels is attached to the front end of the cylinder block 1 (Fig. 2). A water pump 4 is installed on the body of the water channels. A generator 5 is installed on the right side (right and left sides when viewed from the flywheel side) of the engine. The water pump and generator are driven from the pulley 6 with a V-ribbed belt 7 (Fig. 1). The crankcase of the aggregates 8 and the flywheel housing 9 are attached to the rear end of the cylinder block (Fig. 2). Intake manifolds 10 and 11 are located in the collapse of the cylinder block. The connecting pipe 12 for supplying air from the charge air cooler, attached to the rear ends of the intake manifolds, provides the supply of charge air to the intake manifolds. The pipe 13, combining the intake manifolds in the front of the block, provides a uniform supply of charge air into the cylinders of the left and right half blocks (figure 4). Exhaust manifolds 14 (FIG. 3) and 15 (FIG. 2) located outside the engine are attached to the cylinder heads. Turbochargers 18 and 19 are installed on the exhaust pipes 16 (Fig. 3) and 17 (Fig. 2). The tee 20, attached through the body of the water channels to the front end of the cylinder block 1, serves to supply air to the turbocompressors (Fig. 1). The engine is equipped with a charge air cooling system (hereinafter referred to as SONV), consisting of a charge air exhaust pipe, a charge air cooler, an air supply pipe, and a charge air cooler (hereinafter referred to as ONV) is installed on the radiator of the engine cooling system. The fan pumps ambient air through the cooling paths of the ONV and the radiator, cooling, respectively, the air and liquid from the engine cooling system.

The system of gas turbine pressurization and cooling of the charge air consists of two exhaust manifolds, exhaust pipes, turbocompressors, a turbo compressor inlet tee, a turbo compressor outlet tee, a union pipe, a discharge pipe, an ONV supply pipe, compensating hoses, a heat exchanger (ONV), an outlet pipe, a discharge pipe intake manifolds.

The exhaust gases (exhaust) through the exhaust manifolds are discharged to the turbine stage of the turbocompressors, where part of the energy of the gases is converted into the kinetic energy of rotation of the rotors, which is then converted into the air compression work in the compressor stage.

The charge air after the turbochargers through the tee and nozzles enters the air-to-air heat exchanger installed on the radiator of the engine cooling system, then, already cooled in the ONV, through the exhaust pipe, the connecting pipe is routed through the intake manifolds to the engine cylinders.

Gas turbine boost and charge air cooling systems can increase the charge density of the air entering the cylinders, burn more fuel in the same volume and increase the engine's liter capacity, while lowering the temperature of the CPG parts, therefore, they can increase the engine life and also reduce the level of standards exhaust emissions up to EURO-2 requirements. The proposal meets the criterion of how it can be implemented on standard technologies. industrial applicability, so equipment for previously mastered

Claims (1)

A V-shaped internal combustion engine with a turbocharging system including turbochargers, an air supply tee to the turbochargers, a charge air discharge tee and a charge air cooling system including a charge air path consisting of supply and exhaust pipes, a charge air cooler, an input and the output of which is communicated respectively with the turbochargers and with the intake manifold of the engine, characterized in that the turbochargers are located in the front hney engine parts at different heights, but the air inlet tee is attached to the front end face of the cylinder block with threaded elements through water channel casing and further serves for mounting the power generator and the deflection rollers belt transmission.