Siemens Aktiengesellschaft

Markus Mohr

Roland Albert

Johann Heigl

Klaus Niesslbeck

An injector housing () of the injector has an indentation () in which a part of an actuator housing () of the injector is located. A floor of said indentation () is formed by a peripheral support surface () for the actuator housing (). A bottom surface of the actuator housing () is oriented towards the support surface () and has a peripheral recess (). This recess () is such that the bottom surface of the actuator housing () has at least one peripheral projection (), which is oriented towards the support surface () and is adjacent to the support surface (). A seal () for preventing leakage along interfaces between the injector housing () and the actuator housing () is locate din the recess () and is adjacent to the support surface ().

Injector to inject fuel into a combustion chamber

An actuator with a top plate comprises at least one duct opening for a respective electric contact pin. A contact stud carrier with a contact stud is placed over the contact pin. To prevent the possible ingress of plastic into the duct opening between a gap (s) between the contact stud carrier and the top plate during extrusion coating of the actuator or its top plate, according to the invention it is proposed that a sealing washer be located onto the open side of the duct opening of the top plate to provide a hermetic seal. As a result, the contact stud carrier can advantageously always be arranged independently of the thickness of the sealing washer such that a specified actuator length (L) can be precisely maintained. This simplifies the production process for the actuator and reduces its production costs.

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Roth, Germany

Markus Mohr