RU20775U1 - MULTI-CYLINDER INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

Multi-cylinder internal combustion engine.

The utility model relates to engine building, in particular to multi-cylinder internal combustion engines with fuel injection into cylinders.

The solution to the technical problem is aimed at further improving the design of the receiver of a multi-cylinder internal combustion engine, which consists in providing the possibility of maximum lengthening of the channel lengths in the receiver.

The multi-cylinder internal combustion engine contains, in particular, an air supply system including an inlet pipe 1 and a receiver 2 with an internal volume of 3 and channels 4 adjacent to one of the longitudinal walls 5 of the receiver. The inner walls of the 6 channels 4 in the receiver 2 are formed by the outer walls 5 of the housing of the receiver 2, and the connection of the receiver with the inlet pipe has an additional flange with access to the mounting points from above

A predominantly useful model may find application in the automotive industry.

Description

Multi-cylinder internal combustion engine.

The utility model relates to engine building, in particular to multi-cylinder internal combustion engines with fuel injection into cylinders.

The use of an electronic fuel injection system necessitates introducing into the design of the internal combustion engine (hereinafter two) devices that can significantly reduce the resonant amplitudes of the pulsations of the volumetric air flow rate (reduce hydraulic resistance) in the intake system path, in order to improve the filling of the cylinders and increase the effective engine power and economic performance. On the other hand, the suppression of resonant pulsations of gas in the intake system of the internal combustion engine is favorable from the point of view of reducing sound (noise) radiation into the environment produced both by the output section of the air intake pipe (aerodynamic noise) and by the vibrating walls of the intake system elements (structural, cabinet noise) .

So, for example, the Japanese company Yamaha Motor in the application M 61-244824, F02B 27/00, publ. 10.31.86, to reduce ripple and noise, suggests using two receivers, parallel and sequentially connected to the intake manifold route.

Japanese company Honda Motor in the application N 63-219866, F02M 35/10, publ. 09/13/88, suggests using two separate air lines connecting the air purifier and the receiver with two controlled throttles to reduce intake noise when suction is used to close the auxiliary channel at low revs and open both connecting pipelines at high revs. The same company in the application N 61-190159, F02M 35/12, publ. 14.01.87, in order to ensure sound attenuation in a wide range of frequencies, it proposes to connect two noise suppression devices with a -1/4 dead-end wave resonator and a resonant chamber to the inlet pipe.

MKI F02B 29/02

gas pulsations by combining them in antiphase, it is proposed to use mutually agreed additional resonant tubes and an additional receiver.

The Austrian company AVL in the application of Germany N 3820607, F01B 25/00, publ. 12/29/88, to expand the frequency range of the effective operation of the additional acoustic resonator, suggests performing it

variable volume design, adjustable depending on crankshaft rotation speed.

Japanese company Nippon Radzieta in the application of Japan N 62-48047, F01M 1/02, publ. 12.10.87, proposes, in order to increase the effect of damping noise, instead of using large-sized complex designs of silencers, use an anti-resonance inlet pipe, including a controlled noise or vibration source, an electromagnetic valve, receiving acoustic sensors, and a control processor.

Japanese company Hitachi seisakuse in the application of Japan N 2-4840, F16L 55/04, publ. 01/30/90, to reduce fluctuations in the piping system, it proposes that the pipeline branch into at least two channels, at different distances from the branch point, place expansion chambers that reflect direct incident sound waves back to the pulsation source (engine cylinder), and the distance between the chamber walls is selected in a certain way.

The English branch of the company Ford Motor in the application of the UK N 2203488, F02B 29/00, publ. 10.19.88, to suppress gas pulsations and noise in the intake manifold, provides for the installation of an anti-sound device in the form of a special loudspeaker or a special reservoir with an electrovalve.

Japanese company Nissan Jidosia in Japanese application N 51-23656, F02B 37/00, publ. 05/08/89, to reduce the intake noise of the internal combustion engine and increase its power, due to a decrease in the reverse current of the charge air, it is proposed to use a special design of the silencer in the form of an expansion chamber with internal tubes of a certain ratio of diameters and a certain distance of the pipe cuts between each other.

on the hydraulic resistance of the inlet tract, involves the use of two diffuser sections in a bifurcated section of the pipeline, providing a phase shift and compensation of the amplitudes of the pulsations when they are added in the connection zone.

French company Peugeot in French patent N 2536792, publ. 06/22/84, the use of a throttling plate or diffuser insert narrowing the inlet section of the inlet pipe to reduce the intake noise of ICE with direct fuel injection is claimed. The throttle washer or diffuser insert to ensure the required efficiency is located in the antinode wave of the vibrational velocity of the gas stream at some given speed mode of operation of the internal combustion engine. An obvious disadvantage of the device is the increase in hydraulic resistance of the intake system due to narrowing of the bore and, as a consequence, the deterioration of power, economic and environmental (toxic) parameters of ICE. Also, the location of the throttle washer or diffuser insert in one specific place of the inlet path allows you to effectively act on only one resonant frequency and multiple odd harmonics, i.e. there is a limited impact on individual high-speed engine operation modes.

The American branch of Siemens-Bendix in US patent N 4907547, F02M 35/10, publ. 03/13/90, to suppress noise and pulsations in the intake system of the engine, it is proposed to use a special wave reflector located across the inlet pipe of one of the cylinders and a pair of cylinders on a rotating roller, which, when rotated, provides

selective opening of one of the adjacent intake pipes of the engine cylinder.

The Japanese company Mazda Motor in ЕВП N 0376299, F02M 35/12, publ. 07/04/90, to suppress gas pulsations and noise in the intake system of the internal combustion engine, the use of a special device is provided for suppressing each of the resonant harmonics of pulsations that are multiples of X (0.5 + n) the lengths of the resonant waves of pulsations, where n is an integer equal to zero or more than zero.

The German company Volkswagen in the application of Germany N 3742322, F02M 35/10, publ. 07.07.88, it is planned to damp the fluctuations in the flow of intake air in the ICE due to the inclusion in the intake

additional soothing receiver with elastic walls, in which due to the elastic deformation of the receiver walls, due to the pulsating effect of the gas flow, the pulsation energy will be converted into thermal energy in the elastic wall material with high internal friction of the material (rubber). The obvious disadvantages of such a system include the relative high cost of the device,

instability of the operational characteristics of the elastic wall, low durability, the danger of untreated air entering the ICE cylinders when the elastic wall is damaged, significant sound emission

directly pulsating elastic wall, etc.

Analyzing and summarizing the results of the above patent review, it should be concluded that the above devices to improve acoustic performance and reduce gas-dynamic pulsations in the intake systems of ICEs and, accordingly, improve their power, economic and environmental performance are associated with the use of additional expansion or resonance chambers connected both in parallel and sequentially to the intake tract using electronic systems for the formation of artificial antiphase signals to compensate

real signals of pulsations and noise, using additional receivers, additional controlled air ducts and chambers with variable volume, branched gas ducts with phase-controlled diffuser sections.

As a prototype adopted multi-cylinder internal combustion engine described in the application of Japan (JP) No. 3-53451, class F02B 27/00, publ. 08/15/91, BI No. 5-1337. The design of the air path of the internal combustion engine under consideration contains, in particular, an inlet pipe and a receiver with an internal volume and channels adjacent to one of its longitudinal walls, and the receiver is connected to the inlet pipe by bolts inserted from the bottom.

The disadvantage of this design, in terms of its practical implementation, is the short length of the channels in the receiver, due to the limitations of the engine compartment, which reduces the internal combustion engine torque and affects the vehicle’s driving performance at low and medium vehicle speeds, as well as the assembly and disassembly of the vehicle when it is difficult access to bolts from below.

The solution to the technical problem is aimed at further improving the design of the receiver of a multi-cylinder internal combustion engine, which consists in providing the possibility of maximum lengthening of the channel lengths in the receiver.

The essence of the utility model lies in the fact that in the known multi-cylinder internal combustion engine containing, in particular, an air supply system including an inlet pipe and a receiver with an internal volume and channels adjacent to one of the longitudinal walls of the receiver, the internal walls of the channels in the receiver are formed by external walls the receiver’s body, and the receiver is fastened to the inlet pipe by accessing the fasteners from above, for which there is an additional support flange.

The essence of the utility model is illustrated in FIG. 1.

The multi-cylinder internal combustion engine contains, in particular, an air supply system including an inlet pipe 1 and a receiver 2 with an internal volume of 3 and channels 4 adjacent to one of the longitudinal walls 5 of the receiver. The inner walls of the 6 channels 4 in the receiver 2 are formed by the outer walls 5 of the housing of the receiver 2. The receiver 2 and the inlet pipe 1 have an additional flange 7 with mounting on top.

The dynamic nature of the operation of the device is as follows: Outboard air passing through the cleaning system and the ducts enter the internal volume 3 of the receiver 2 and then distributed through the channels 1 in accordance with the order of operation of the ICE cylinders. In this case, an increase in engine torque at medium and low speeds of rotation of the crankshaft is achieved by inertial recharging of the air charge, an increase of which is achieved by increasing the length of the channels from the internal volume 3 of receiver 2 to the ICE cylinders

With this design, it is possible to increase the length of the channels 4 in the receiver 2, while there are no additional problems with access to the mounting points for the convenience of servicing the vehicle. This, in turn, allows to increase the ICE filling with air at low and medium crankshaft rotational speeds, and consequently, to improve the power and fuel and economic parameters of ICE.

a promising VAZ engine, while achieving improved technical and economic performance of the engine, especially at low and medium speeds of rotation of the ICE crankshaft, as well as ease of assembly and maintenance.

Claims (1)

A multi-cylinder internal combustion engine comprising, in particular, an air supply system including an inlet pipe and a receiver with an internal volume and channels adjacent to one of the longitudinal walls of the receiver, characterized in that the internal walls of the channels in the receiver are formed by the outer walls of the receiver and the connection of the receiver with an inlet pipe has an additional flange with access to mounting points from above.