SU1290005A1 - Internal combustion engine cylinder head - Google Patents

Abstract

The invention relates to engine building, namely to internal combustion engines. The aim of the invention is to increase the efficiency of the head by intensifying the vortex of charges due to the fulfillment of the inlet channel after its rotation with inclined upper and side walls, with a protrusion in the valve chamber and confused inlet section. The presence of confuser 28 with a curvilinear generatrix reduces. hydraulic resistance and flow interruption even at the displacement of sections 8 and 29 due to technological sparse in production. The rotation 10 is effected through an angle d of not less than 90, and the charge almost unstressed enters that part of channel 2, where the charge by the top wall 12, inclined at an angle p 25, is 40 ° & to the plane 9, it is pressed against it and passes through the minimum section 14 of channel 2 in front of the neck 15 of valve 4, which covers an area of 0.6 - 0.7 from the maximum flow section 16 of valve 4, 3 3. Clause f-ly, 5 silt .-, SL SL b. 75 Jf 21 Fiá.1

Description

11290005

This invention relates to mechanical engineering, in particular, to internal combustion engines.

The purpose of the invention is to increase the efficiency of the head by intensifying the vortex of charge.

Figure 1 shows the head, a section of a plane parallel to the axis of the intake valve; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1; figure 4 - section b-In 2;

Head 1 contains one inlet 2 each. And outlet 3 channel, valves 4 and 5, seats 6 and 7, inlet

ten

and 29 due to technological variation in manufacturing.

Since the turn 10 is osurtured at an angle of 11 not less than 90, the charge almost without shock enters that part of the channel 2, where the charge by the top wall 12, inclined at an angle of 13 to 25-40 ° to the plane 9, pressed to the plane 9 and passes through a minimum cross section 14 of channel 2 in front of the neck 15 of valve 4, having an area of 0.6 - 0.7. From the maximum cross section of valve 16, this increases the charge velocity at the inlet to

The cross section 8 of the inlet channel 2, cross section 16, makes the direction moving in the lower plane 9 of the HEAD 1. Channel 2 has a turn of 10 at an angle of 1I not less than 90 °. After turning 10, the upper wall 12 of the channel 2 is inclined to the plane 9 at an angle of 13 to 25-40 ° so that the minimum cross section 14 of the channel 2 in front of the neck 15 of the valve 4 is 0.6-0.7 of the maximum passage section 16 of the valve 5. And Near the axis 17 of the cylinder 18, the sidewall 19 of the channel 2 is inclined to the plane 9 inside the channel 2 at an angle of 20, gradually decreasing to 90 ° - d in the valve chamber 21, where ot is the angle in the plane 9 between the line 22 of the centers of the section 8 and the saddle 6 and perpendicular to the line 23 of the centers of the saddles 6 and 7, and passes in the valve chamber to the overhanging

20

25

thirty

or approaching the direction of the plane 9, and therefore contributes to increasing the vortex intensity. In addition, the charge wall 19 is pressed in channel 2, then in the valve chamber 21 and section 16 to the side between the axis of the valve 4 and the cylinder 18, this is achieved by being close to the axis 17 of the cylinder 18, the side wall 19 of the channel 2 is inclined to the plane 9 inside channel 2 at an angle

20, gradually decreasing to oL in the valve chamber 21, where d is the angle in the plane 9 between the line 22 of the center of section 8 and the seat 6 and the perpendiculars to the line 23 of the centers of the saddles 6 and 7, and this is facilitated by the transition of the wall 19 in the valve the camera

21. Hanging over the saddle 6 sickle 6 is a crescent-shaped protrusion 24 with a prominent projection 24 at an angle of coverage 25,

scrap coverage 25, equal to 70 - 90, axis 26 at an angle of 27, equal to 45 - 55, to line 23, with an area of no more than 0.15 neck section 15. The entrance section of channel 2 is designed as a confuser 28 with a curvilinear generatrix. Konfueor, 28 begins, from section 8, which is adjacent to exit section 29 of the previous path. The infuser 28 turns into a turn 10.

The cylinder head works as follows.

When opening the intake valve 4, the charge from the previous path through the outlet section 29 enters the inlet section 8 of the inlet channel 2 located in the lower plane 9 of the head 1 and enters the turn 10 through the confusor 28. The presence of the confuser 28 with a curvilinear generatrix reduces the hydraulic resistance and flow separation even at displacement of sections 8 40

45

50

55

equal to 70 - 90, axis 26 at an angle of 27, equal to 45 - 55 ° to line 23, with an area of no more than 0.15 of the minimum cross-sectional area.

Claims (3)

Invention Formula 1. The cylinder head of an internal combustion engine comprising at least one cylinder with an intake port, a valve and a seat, wherein the inlet port of the intake port is located in the lower plane of the head, and the channel has a rotation in a plane parallel to the valve axis at an angle of at least 90 ° and inclination to the lower plane of the head, characterized in that, in order to increase efficiency by intensifying the vortex of charge, the inclination of the upper wall of the inlet channel to the lower plane of the head is equal to 25-40, the minimum cross section and 29 due to technological variation in manufacturing. Since the turn 10 is osurtured at an angle of 11 not less than 90, the charge almost without shock enters that part of the channel 2, where the charge by the top wall 12, inclined at an angle of 13 to 25-40 ° to the plane 9, pressed to the plane 9 and passes through a minimum cross section 14 of channel 2 in front of the neck 15 of valve 4, having an area of 0.6 - 0.7. From the maximum cross section of valve 16, this increases the charge velocity at the inlet to or approaching the direction of the plane 9, and therefore contributes to increasing the vortex intensity. In addition, the charge wall 19 is pressed in channel 2, then in the valve chamber 21 and section 16 to the side between the axis of the valve 4 and the cylinder 18, this is achieved by being close to the axis 17 of the cylinder 18, the side wall 19 of the channel 2 is inclined to the plane 9 inside channel 2 at an angle 20, gradually decreasing to oL in the valve chamber 21, where d is the angle in the plane 9 between the line 22 of the center of section 8 and the seat 6 and the perpendiculars to the line 23 of the centers of the saddles 6 and 7, and this is facilitated by the transition of the wall 19 in the valve the camera 21. Hanging over the saddle 6 sickle ledge 24 at an angle of coverage 25, 0 five 0 five equal to 70 - 90, axis 26 at an angle of 27, equal to 45 - 55 ° to line 23, with an area of no more than 0.15 of the minimum cross-sectional area. Invention Formula 1. The cylinder head of an internal combustion engine comprising at least one cylinder with an intake port, a valve and a seat, wherein the inlet port of the intake port is located in the lower plane of the head, and the channel has a rotation in a plane parallel to the valve axis at an angle of at least 90 ° and inclination to the lower plane of the head, characterized in that, in order to increase efficiency by intensifying the vortex of charge, the inclination of the upper wall of the inlet channel to the lower plane of the head is equal to 25-40, the minimum cross section the channel in front of the valve orifice is 0.6–0.7 of its maximum flow area equal to the inlet, the side of the channel is inclined to the lower plane of the head near the axis of the cylinder, and the inlet section of the canary is made in the form of an infuser. 2. The head of pop. 1, which differs from the fact that, near the axis of the cylinder, the side wall of the channel is inclined to the lower plane of the head at an angle decreasing from 90 to 90 ° –ot, where oL is the angle between the line connecting input centers five tO 90005 sections and valve seats, and perpendicular to the line connecting the centers of the seats. 3. The head according to PP, 1 and 2, about 5 and 5, which on the side wall of the channel closest to the cylinder axis in the valve chamber has a crescent-shaped projection hanging over the valve seat at an angle of coverage 70 - 90 °, whose axis is located at an angle of 45-55 to the line connecting the centers of the saddles, and the cross-sectional area does not exceed 0.15 of the throat of the channel. 4, Head on PP. 1-3, characterized in that the confuser is filled with a curvilinear generator. 15 23 / 7 FIG. 2 fie.Z J6 tfru