Injector Sleeve for an Injector, and Blowing Device and Internal Combustion Engine

An injector sleeve for an injector for introducing a gaseous fuel into a combustion chamber of an internal combustion engine includes an intake in which the injector is at least partially receivable. A lateral surface on an external periphery has a longitudinal region around which a coolant flowing through a cooling chamber of the internal combustion engine is flowable. A sealing region connected to the longitudinal region seals the combustion chamber from the cooling chamber. A cap is arrangeable in the combustion chamber and the cap has a flow opening where gaseous fuel flowing out of the injector is directly flowable through the cap for shaping a jet of the gaseous fuel.