RU2053395C1 - System for removal of high-temperature deposits from parts of engine cylinder-and-piston group without disassembly of engine - Google Patents

Abstract

FIELD: manufacture of engines. SUBSTANCE: system has tank-mixer 1, delivery pipe line connected with tank-mixer 1 and cylinder-and- piston group, delivery pump 3 and cavitation device 4 fitted in delivery pipe line between pump 3 and cylinder-and-piston group, three-way cock 5 and bypass pipe line 6 connected to tank-mixer 1 and to delivery pipe line after device 4 through cock 5. EFFECT: enhanced reliability. 14 cl, 1 dwg

Description

 The invention relates to engine building, and in particular to means of repair and maintenance of engines, and can be used to remove high-temperature deposits from parts of the cylinder-piston group (CPG) without disassembling the engine.

 A known installation for in-place coking of spraying nozzles of ICE nozzles, comprising a device for preparing a water-fuel emulsion, connected with a cavity for filling a fuel injection pump, a diesel engine operating mode switchgear, a switchgear located between the pump and a device for preparing a water-fuel emulsion, and a device for automatically controlling the installation.

 The disadvantages of this installation are low productivity, low stability of water-fuel emulsion, as well as the complexity of the design, which reduces the reliability of the device.

 There are also known methods of ultrasonic treatment of waterlogged fuel using, for example, an ultrasonic hydrodynamic siren or an ultrasonic mixer. However, these methods are intended only for pretreatment of watered fuel before its use and to increase the stability of viscous residual fuel mixtures with distillate to improve the fuel preparation processes before burning it and to prevent the corrosion of precision parts of fuel equipment.

 A known installation for in-place coking of atomizer nozzles of an internal combustion engine, which comprises a device for preparing an emulsion, including a mixer tank with pipelines for supplying water and emulsion exhaust, a fuel injection pump connected through an intake manifold to an emulsion exhaust pipe, and through injection fuel pipelines with nozzles installed on the mixer tank, in addition, the installation contains two ring DC electromagnets with the same direction creating the electromagnetic field connected to the automatic control device, one of the electromagnets covering the pipeline for emulsion removal, and the other covering the pipeline for supplying water to the mixer tank.

 The main disadvantage is the low productivity of the installation. The presence of a high-pressure fuel pump and nozzles with precision parts reduces the reliability of the installation, increases energy consumption, especially in the process of preparing a water-fuel emulsion, as well as in combination with ring electromagnets, a mixing tank and pipelines, significantly complicates and complicates the design of the entire installation as a whole. In addition, this installation is intended only for the coking of atomizer nozzles, and not parts of the engine’s CPG, which include atomizer nozzles, the firing surface of the combustion chamber, piston rings and exhaust valve.

 As a prototype, a technical solution for autosw. USSR N 1163019, in which the ICE parts are cleaned of deposits by means of a detergent in the form of a mixture of toluene with ethyl hydrolysis alcohol, which is fed to the engine, kept in the idle engine for 5-6 hours, the shaft is turned and drained with liquid.

 This method of cleaning ICE parts along with advantages has a number of disadvantages, such as the inability to clean parts from high temperature deposits. This method removes low-temperature deposits. In addition, the cleaning fluid in this technical solution is toxic, aggressive, fire hazard. The duration of such cleaning is quite large and it is carried out only with the engine off. After such cleaning, a complete oil change will be required, since the cleaning liquid remaining in the ICE after it is drained from the crankcase reduces the lubricating properties of the surfaces of the parts, which leads to increased wear of friction pairs after starting the engine.

 The aim of the invention is to increase the efficiency of cleaning parts of an internal combustion engine from high-temperature deposits without disassembling and stopping the engine.

 This goal is achieved by the fact that in the system for removing deposits from parts of the engine’s CPG without disassembling it, containing a washing liquid tank, a discharge pipe connected to the tank and the engine’s CPG, and an injection pump installed on the pipeline, an additional cavitation device is installed on the discharge pipe between the pump and the engine’s CPG, and the washing liquid tank is equipped with fuel and water pipelines. The system is also additionally equipped with a bypass pipe connecting a pipeline behind a cavitation device with a washing liquid tank through a three-way valve.

 The proposed system, unlike the prototype, has several advantages. It provides cleaning of the engine’s CPG without stopping it, during its operation and without disassembling it. Thus, the cleaning process is reduced to 0.5-1 hours. The ultrasonic-treated water-fuel emulsion has special washing properties that allow the CPG to be cleaned of high-temperature deposits. The proposed system is easy to operate, since it does not require any special detergents, and for cleaning it uses only fuel, on which the engine runs and to which only water is added.

 In order to improve the activation-washing effect, the process of processing the emulsion is best repeated 4-8 times. For this, a three-way valve and an additional pipeline are provided, allowing to provide a closed system for preparing the emulsion. In such a system, its multiple runs are possible.

 The drawing shows a diagram of a system for removing high-temperature deposits from parts of the CPG without disassembling the engine.

 The system comprises a mixing tank 1 with fuel and water supply pipelines 9, into which various additive compositions can be added if necessary. The mixer tank 1 (washing liquid tank) is connected by a pipe 2 to a discharge pump 3. The pump 3 is connected by a pipe to a device 4 for processing a liquid flow in cavitation mode.

 The output of the device 4 is connected via a three-way valve 5 by means of a bypass pipe 6 with a mixing tank 1 and an outlet (pipe) 7 for supplying water-fuel emulsion to the engine for the CPG.

 Installation works as follows.

 In the mixing tank 1 is poured a certain amount of fuel and water in the amount of 10 30% of the fuel volume. If necessary, various additive compositions are added to tank 1. The injection pump 3 is turned on and supplies fuel and water from the mixer tank 1 to the cavitation device 4, which exposes the fluid flow to ultrasonic hydrodynamic cavitation treatment. At the exit of device 4, a highly stable microdispersed water-fuel emulsion with specific activation-washing properties is formed. Next, the emulsion through a three-way valve 5 enters the engine through a pipe-wire 7. The processing process can be repeated using a three-way valve 5 and pipeline 6. The circulation rate of a water-fuel emulsion can be 4-8 times depending on the required dispersion and stability of the emulsion and the frequency of its use . After the preparation of the emulsion using the three-way valve 5 is completed, the output of the device 4 is connected to the pipeline 7 for supplying a fuel-oil emulsion to the parts of the engine’s CPG and on this emulsion the engine runs at rated power for 30-60 minutes After that, the engine power and the composition of the exhaust gases are measured. The process of removing high-temperature deposits from the internal combustion engine is characterized by a high increase in exhaust smoke, and the end of the washing of the engine’s CPG is characterized by an increase in internal combustion engine power by 3-5% and a decrease in smoke and exhaust toxicity by 30-70%

Claims (2)

 1. SYSTEM FOR REMOVING HIGH-TEMPERATURE DEPOSITS FROM PARTS OF THE CYLINDER-PISTON ENGINE GROUP WITHOUT ITS DISASSEMBLY, containing a tank of washing liquid, a discharge pipe connected to a tank and a cylinder-piston group of the engine, and installed on the pipeline, which is connected to the pipeline discharge pipeline between the pump and the cylinder-piston group of the engine, and the tank is equipped with pipelines for supplying fuel and water.  2. The system according to claim 1, characterized in that it is equipped with a three-way valve and a bypass pipe, and the bypass pipe is connected to the tank and through a three-way valve to the discharge pipe behind the cavitation device.