CHOKEVALVE FOR AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To reduce costs by simplifying the structure of a chokevalve in an automatic transmission. SOLUTION: This chokevalve V for an automatic transmission is composed of a valve hole 64 having a circular cross section penetrating through a valve body 61 in the thickness direction, and a columnar valve main body 67 to be engaged with the valve hole 64. The valve main body 67 is provided with a pair of circular grooves 67a and 67b formed at an outer circumference on both end sides, and a small diameter part 67e formed between the circular grooves 67a and 67b to form a choke 68 to the valve hole 64. An inlet port 65 and an outlet port 66 formed between oil grooves 61a and 61b formed in both surfaces of the valve body 61 and two separate plates 63 and 62 are respectively communicated with the circular grooves 67a and 67b.