KR970070420A - Intake valve device for preventing deposition of sediments - Google Patents

Abstract

And an intake valve 1 in an internal combustion engine constituted by a valve rod 1a and a valve head 1b which move up and down. An annular bump 2a and a bump 2b connected to the intake port 10 at the lower end of the contact surface of the valve rod 1a and the valve guide 2 are formed. The lubricant 8 flows down through the groove into the gap between the valve stem 1a and the valve guide 2 and flows out of the valve guide 2 and attached to the valve head 1b in the intake port 10. [ The lubricating oil 8 on the valve head 1b is washed away by injecting fuel from the fuel injecting means 9. [

Description

Intake valve device for preventing deposition of sediments

Since this is a trivial issue, I did not include the contents of the text.

FIG. 1 is a cross-sectional view of a main part of a first embodiment of the present invention. Figure 2 is an enlarged cross-sectional view along line II-II of Figure 1. 3 is an enlarged cross-sectional view along line III-III in FIG. 1, and FIG. 4 is an enlarged cross-sectional view of a valve guide according to a second embodiment of the present invention.

Claims (9)

An intake valve 1 constituted by a valve head 1b and a valve stem 1a, a valve guide 2 into which a valve stem 1a is inserted and a fuel injection means for injecting fuel toward the valve head 1a 9 formed in the vicinity of the fuel injecting means 9 and a contact surface between the valve guide 2 holding the annular groove 2a and the groove 2b connected to each other and the valve stem 1a, And the lower end of the groove (2b) opened toward the intake port (10). The intake valve device according to claim 1, wherein the annular groove (2a) and the groove (2b) are formed below the contact surface of the valve guide (2) toward the valve rod (1a). 2. The intake valve device according to claim 1, wherein the annular groove (2a) is formed below the contact surface of the valve guide (2). The intake valve device according to claim 1, wherein the deposit is lubricating oil (8) flowing into a gap between the valve guide (2) and the valve rod (1a). The intake valve device according to claim 1, wherein the coating layer (15) has an oxidation catalyst function formed in at least a portion of the intake valve (1) in the intake port (10). An intake valve 1 constituted by a valve head 1b and a valve stem 1a, a valve guide 13 into which an intake valve 1 is inserted and a fuel injection means 9 and a contact surface between the valve guide 13 holding the helical groove 14 and the valve stem 1a and a helical shape opened toward the intake port 10 in the vicinity of the fuel injection means 9 And the lower end of the groove (14). The intake valve device according to claim 6, wherein a spiral groove (14) is formed on a contact surface between the valve guide (13) and the valve rod (1a). The intake valve device according to claim 6, wherein the deposit is made of lubricating oil (8) flowing into a gap between the valve guide (13) and the valve rod (1a). The intake valve device according to claim 6, wherein the coating layer (15) has an oxidation catalyst function formed at least in a portion of the intake valve (1) in the intake port (10). ※ Note: It is disclosed by the contents of the first application. ※ Note: It is disclosed by the contents of the first application.