Abstract: A connector comprises a base plate defining a first end and a second end along a longitudinal direction, a first connecting arm, a first end of which is connected with the second end of the base plate, and a second end of which is substantially extended upwards relative to the first end thereof, a contact arm, a first end of which is connected with the second end of the first connecting arm, and a second connecting arm, a first end of which is connected with a second end of the contact arm, and a second end of which is substantially extended downwards to the base plate so as to be contactable with the base plate. The connector has multiple connecting paths, thus realizing good high-frequency characteristics.

Abstract: A connector comprises a base plate defining a first end and a second end along a longitudinal direction, a first connecting arm, a first end of which is connected with the second end of the base plate, and a second end of which is substantially extended upwards relative to the first end thereof, a contact arm, a first end of which is connected with the second end of the first connecting arm, and a second connecting arm, a first end of which is connected with a second end of the contact arm, and a second end of which is substantially extended downwards to the base plate so as to be contactable with the base plate. The connector has multiple connecting paths, thus realizing good high-frequency characteristics.

Abstract: An intake air preheater for a diesel engine comprising an outer housing, at least two built-up heating bodies 26, at least three heat storage exchangers 25, a valve plate 31 and an insulating housing 36. A preheater body 20 is formed by alternately connecting each heat storage exchanger 25 and each built-up heating body 26 together by rivets 33 and a straight air passage 22 is formed in the preheater body 20. The preheater body 20 is installed in the outer housing by attaching two outermost heat exchange plates 39 of the preheater body 20 to two adiabatic rings 24 on the inner wall of the outer housing and a surrounding air passage 29 is formed between the outer housing and the preheater body 20. A diesel engine may start at temperatures as low as −45° C. by means of the preheater and airflow has no adverse effect on the operation of the diesel engine. The poisonous waste gas generated by the diesel engine may also be reduced.