Method of setting the ball travel of a valve-lash-adjusting element
View Patent ↗The invention relates to a method of setting the ball travel of a valve-closing body, designed as valve ball, of a control valve of a hydraulic valve-lash-adjusting element which has a plunger with a plunger head and a central bore, a valve seat being provided at the outer end of this central bore, this valve seat being controlled by a valve ball, the ball travel of which is limited by a valve cap which has a cap flange and a cap base, the cap flange resting with its bearing surface on a base of a recess of the plunger head, and a stop of the cap base serving as a travel limit for the valve ball.
1. A method of setting the ball travel of a valve-closing body, designed as valve ball, of a control valve of a hydraulic valve-lash-adjusting element which has a plunger with a plunger head and a central bore in the same, a valve seat being provided at the outer end of this central bore, this valve seat being controlled by a valve ball, the ball travel of which is limited by a valve cap which has a cap flange and a cap base, the cap flange resting with its bearing surface on a base of a recess of the plunger head, and a stop of the cap base serving as a travel limit for the valve ball, comprising measuring an internal depth dimension (a) of the valve cap, extending this internal depth dimension (a) from the bearing surface of the cap flange up to the stop of the cap base, and lying a projecting dimension (b) of a measuring ball, in the valve seat, relative to the base of the recess has been measured, determining a calculated value of the ball travel (c=a−c), and selective, a matched valve ball having the ball diameter required for the desired ball travel from a number of valve balls of different, known diameter and fitting the same together with the measured plunger and the measured valve cap.
2. A method of setting the bail travel of a valve-closing body, designed as valve ball of a control valve of a hydraulic valve-lash-adjusting element which has a plunger with a plunger head and a central bore in the same, a valve seat being provided at the outer end of this central bore, this valve seat being controlled by a valve ball, the ball travel of which is limited by a valve cap which has a cap flange and a cap base, the cap flange resting with its bearing surface on a base of a recess of the plunger head, and a stop of the cap base serving as a travel limit for the valve ball comprising measuring the actual value of the ball travel of the control valve fitted together with any desired valve ball and any desired valve cap and then pressing the valve cap to set its desired value.