RU52177U1 - STAND FOR OPERATION OF INTERNAL COMBUSTION ENGINES - Google Patents

Abstract

The stand for running-in internal combustion engines belongs to the field of mechanical engineering and can be used in the conditions of transport enterprises for major and medium repairs. In addition to the supporting frame, the electric motor kinematically connected to the shaft of the internal combustion engine, and the control device, the adapter’s design includes an adapter for placing smaller engines, consisting of a frame with holes for fastening, a transverse beam, and a coupling for transmitting torque from the test engine to cooling fan drive fan, radiator, adapter pulley, fan drive pulley and hoses for supplying and discharging coolant STI. The proposed stand is used for running in the YaM3240, YaMZ 238 and YaM3236 engines installed on BelAZ and KrAZ vehicles in the transport workshop of OJSC Granit-Kuznechnoye.

Description

The utility model relates to the field of mechanical engineering and can be used for running-in internal combustion engines during their overhaul.

During the operation of internal combustion engines, they are subject to uneven wear: parts and assemblies operating in extreme conditions wear out more intensively.

For almost all types of internal combustion engines in all countries of the world, it is considered economically more expedient to carry out repairs instead of a complete replacement.

After the repair, and especially the capital one, the engine is run-in before installation to check the correctness of the repair and evaluate the technical characteristics.

A number of stands are known for running-in and testing internal combustion engines (application for invention No. 2003123757, RF patent for utility model No. 34735, RF patent for utility model No. 34736, RF patent for utility model No. 432315, certificate of the Russian Federation for utility model No. 13426) . The prototype of the proposed device is a stand according to the patent of the Russian Federation No. 2256896.

All such stands, including those based on the prototype, provide for rather complicated technical equipment and staff qualifications. These stands are located in specialized premises of specialized enterprises.

Motor companies operating internal combustion engines carry out repairs and running-in at their own stands.

The main elements of such stands are the frame or its part from a regular vehicle, an electric motor installed with

the possibility of kinematic connection with the shaft of an internal combustion engine, control devices and other auxiliary nodes. At such stands, the burn-in of the internal combustion engine is carried out with sufficient quality.

When operating at the enterprise several types of internal combustion engines, several stands are also necessary.

The purpose of the utility model is to develop a design that allows you to expand the operational capabilities of the stand, i.e. carry out running-in of several types of internal combustion engines using the same basic units and assemblies with minimal installation and dismantling costs.

This goal is achieved by installing on the main support frame an additional removable adapter for installing smaller motors.

An approximate number of such internal combustion engines are the YaM3240, YaM3238 and YaM3236 engines.

The design of the utility model is illustrated by diagrams: FIG. 1 is a plan view, FIG. 2 is a view of AA, FIG. 3 is a view of a BB.

The diagram shows: 1 - stand frame, 2 - electric motor, 3 - control devices, 4 - adapter frame with holes for attaching to the stand frame and mounting the test engine, 5 transverse beam, 6 - coupling with mount for transmitting torque from the test engine to the fan of the cooling system, 7 - fan, 8 - hoses for supplying and discharging coolant between the radiator and the engine under test, 9 - radiator, 10 - pulley with mounting adapter, 11 - pulley with mounting fan drive.

Work on the stand is as follows.

Poi running engines YaMZ 3240 frame adapter 4 is not installed. From the electric motor 2, the torque is transmitted to

test engine. Using control devices 3, the parameters of the engine that has been driven in are evaluated (compression, pressure, temperature, etc.), the external examination checks the absence of an abnormal leak of oil and coolant, as well as the absence of abnormal knocks by sound.

When running the ICE YaMZ 238 and YaMZ 236, these engines are installed on the frame of the adapter 4 with the connection of the hoses 8 and the coupling 6. The operation is repeated similarly to the previous one. In this case, the use of a standard radiator with a fan is not required, but the radiator 9 installed on the stand with a fan is used.

The proposed stand design is used for running-in of internal combustion engines YaM3240, YaMZ 238 and YaM3236 from BelAZ and KrAZ vehicles in the transport workshop of OJSC Granit-Kuznechnoye.

Claims (1)

A stand for running-in of internal combustion engines containing a support frame, an electric motor as an actuator installed with the possibility of kinematic connection with the shaft of an internal combustion engine, control devices and other components, characterized in that a removable adapter for installing smaller engines is installed on the support frame consisting of a frame with mounting holes, a crossbeam, a coupling for transmitting torque from the test engine to the fan drive cooling system, radiator, fan, hoses for supplying and discharging coolant, a pulley of a transition device and a pulley of a fan drive.