Engine for auto-injector for administering a dose liquid medicament (M) in (1) relates to (1.1), the engine (1.1), and a (9) cases, the present invention includes a case (9 In), a distal end and having a proximal end, the proximal end, is arranged to be mounted to (1.2) packaged syringes, packaged syringe (1.2), a hollow needle ( and a (3) syringe with a (5) and the stopper 4), the stopper (5), and is intended for moving the drug (M) is sealed (3) syringe, a syringe (3), are slidably disposed relative to (9), cases (9): - Startup: - from a position covered pressing needle (4) to the exposure position, and, - drug (M) drive means it is possible to manipulate a syringe (3) to provide a dose (10), - before the manual operation, the lock under load, drive means (10), manual operation, the injection and a (11) activating means which is arranged to release (10) drive means for said engine in (1.1), drive means (10) is configured as a gas spring, gas spring, (10.1), and the cylinder, wherein (10.2) with a piston plunger for transmitting the force of the spring (10.3), compressed gas (G) is, the piston cylinder (10.2) equipped in the high-pressure cavity that is defined between the distal end (10.1), a cylinder (10.1) is arranged slidably in the case of (9), a latch (14 has been configured) is to prevent translational movement between the cylinder and (10.1) cases of (9), the latch (14), (10) is fully extended at least most gas spring it has been released and is characterized in that it is disengagable by allowing that (10) translates in the distal direction (D) a gas spring which is, thus being stretched.本発明は、液体薬剤(M)の用量を投与するための自動注射器(1)のためのエンジン(1.1)に関し、エンジン(1.1)は、ケース(9)を含み、ケース(9)は、遠位端および近位端を有し、近位端は、パッケージ化シリンジ(1.2)に取り付けられるように配置されており、パッケージ化シリンジ(1.2)は、中空針(4)およびストッパ(5)を備えたシリンジ(3)を含み、ストッパ(5)は、シリンジ(3)を封止し薬剤(M)を移動させるためのものであり、シリンジ(3)は、ケース(9)に対してスライド可能に配置されており、ケース(9)は:-起動時:-覆われた位置から露出位置へ針(4)を押すこと、および、-薬剤(M)の用量を供給するためにシリンジ(3)を操作することが可能である駆動手段(10)と、-手動操作の前、駆動手段(10)を、負荷状態でロックし、手動操作時、注射
