SU1578374A1 - Device for disconnection of gas exchange in cylinders of internal combustion engine - Google Patents

Abstract

The invention provides reliable gas exchange at the time of start-up in the engine cylinders to be disconnected. The device contains a pusher made in the form of a cylindrical body 2 with a bottom and an annular groove 5 located in the body 2 of the expanding spring 13, the stop 7, the spring-loaded rod-piston 11 and the locking elements 6, which are placed in the radial holes 14 and interact with the annular groove 5. The rod end of the rod-piston 11 is made in the form of a cone, in the body of the stop 7 there is an internal bore and radial holes 14 in which the fixing elements are placed 6. The device ensures reliable gas exchange in the cylinders at the moment of filling ska, regardless of the presence of pressure in the lubrication system. 1 hp f-ly, 3 ill.

Description

The invention relates to internal combustion engines, in particular to devices for shutting off gas exchange in the cylinders of engines with switchable cylinders.

The purpose of the invention is to provide reliable gas exchange in the cylinders at the time of engine start.

FIG. 1 shows a device for shutting off gas exchange; valves are turned on; figure 2 - the same, the valves are turned off; on fig.Z - section aa in figure 1.

The device contains (Figures 1 and 2) an oil inlet 1 in the cylinder block, which is connected to the pressure oil line of the lubrication system through a cylinder shutdown control system (not shown), a push housing 2 with an oil inlet groove 3 and a dipstick - the driving channels 4 and the annular groove 5 with beveled edges for fixing in it fixing elements 6, for example T-shaped crackers. Inside the housing 2 of the pusher, the abutment 7 of the pusher bar with the oil-supplying annular groove 8 and the oil-supplying channels 9 communicating with the oil-supplying channels 4 on one side are placed in it. the control cavity 10. In the body of the abutment 7 there is an internal bore into which the piston rod 11 is placed with the possibility of axial movement and with which it forms the control cavity 10. The piston rod H 1 is preloaded by the spring 12 and the axial rod part interacting with the fixing ale cients 6 and its end is designed as a cone. Between the stop 7 of the pusher bar and the body 2 of the pusher there is an expanding spring 13. In addition, in the body of the stop 7 there are radial holes 14 in which the fixing elements are placed. B.

The device works as follows.

When a signal is received by the cylinder shutdown control system (not shown) to turn on the cylinders, oil is drained through the hole 1 of the cylinder block and, accordingly, into the control cavity Yu, the spring 12 moves

the piston rod 11 to the upper position. The latter, by means of its conical part, expands the fixing elements 6 and at the moment when the cam of the shaft of the timing mechanism turns rotated to the body 2 of the pusher with its cylindrical part, and, accordingly, the fixing elements 6 are opposite the annular groove 5, the latter enter

0 it and become wedged in the annular groove 5. In this position, the mutual movement of the stop 7 of the pusher bar relative to the body 2 of the pusher becomes impossible, and the whole mechanism begins

5 work as one. When a signal is received by the cylinder shutdown control system (not shown), the cylinder is turned off by the oil through the oil supply hole through the cylinder block.

0 oil supply channels 8, 9 and grooves 3, 8 into the control cavity 10. It acts on the piston rod 11, the latter compresses the spring 12 and lowers with its rod part below the level of the locking elements 6, the latter are not opened up, and the camshaft of the cam shaft on the body of the pusher 2, making a relative movement relative to the stop 7 of the shaft, pushes the locking elements b along the beveled edges of the annular groove 5 inwards, and the stop 7 of the rod of the pusher gets the possibility of mutual p displacement relative to hull 2 tol5. In this case, the cylinder valves of the engine turn out to be closed, since the kinematic connection between the cam of the timing shaft and the valves is broken.

Thanks to the kinematic connection between the parts of the gas distribution system in the absence of oil pressure in the engine lubrication system, when the engine starts, when there is no pressure in the lubrication system, the engine starts on all cylinders and increases reliability. engine operation in case of accidental breakdown in the engine lubrication system.

Claims (2)

1. A device for shutting off gas exchange in cylinders of an internal engine, comprising a pusher made in the form of a cylindrical body with a bottom, in which an expanding spring, a movable stop interacting with a rod, a spring-loaded piston-piston and a servo-mechanism with a control cavity communicated with the source are located pressure through a cylinder shutdown control system, characterized in that, in order to ensure reliable gas exchange in the cylinders at the time of engine start, it is provided with locking elements, on the inner surface of the cylindrical body there is an annular groove with bevelled edges, and in the body of the abutment 5 internal bore and radial holes in which the fixing elements are interconnected on one side with the rod-piston rod part, and on the other with an annular groove of the cylindrical body, the end of the rod-piston rod part being formed as a cone, and the control cavity is formed the surface of the internal bore stop and the piston rod, which is placed in this bore with the possibility of axial movement. 2. The device is pop.1, characterized in that the fixing elements are made in the form of T-shaped crackers. Fig 2 Aa Figz