| 摘要 |
A hand-held power tool powered by a gas combustion mechanism comprising a combustion chamber, a second chamber within a cylinder having aft and fore ends. The combustion chamber in fluid communication with the second chamber, and a first supercharger including a driver assembly, a drive motor and a fan assembly, the driver assembly having a piston and driver movable within the cylinder between said aft and fore ends. In use, whilst the piston is at or near the fore end of the cylinder, the fan assembly introduces air into the combustion chamber and the second chamber thereby pressuring the air there within, and fuel gas is introduced into the combustion chamber from a first supply port, the air and fuel gas becoming an air/fuel gas mixture therein. The drive motor moves the piston to a position at or near the aft end thereby compressing the air/fuel gas mixture within the first combustion chamber so that it is ignites within the combustion chamber to impart motion onto the piston. A second supercharger is connected to the combustion chamber for supplying a fuel gas and air mixture from a second supply port. |
| 主权项 |
1. A hand-held power tool, the operational power of which is provided by a gas combustion mechanism, said gas combustion mechanism comprising a first combustion chamber, a second chamber within a driving cylinder having an aft end and a fore end, said first combustion chamber in fluid communication with said second chamber via said aft end, a first supercharger including a driver assembly, a drive motor and at least one fan assembly, said driver assembly having a piston and driver movable within said driving cylinder between said aft end and said fore end, said drive motor operably connected to said driver assembly, wherein in use, whilst said piston is at or near said fore end of said driving cylinder, said fan assembly introduces air into said first combustion chamber and said second chamber thereby at least partially pressuring the air there within, fuel gas is introduced into said combustion chamber from a first fuel supply port, the air and fuel gas being mixed to form an air/fuel gas mixture therein, said drive motor operably moves said piston to a position at or near said aft end thereby compressing said air/fuel gas mixture within said first combustion chamber so that said air/fuel mixture is ignited within the combustion chamber to impart motion onto said piston and to facilitate the operation of the tool, characterized in that a second supercharger is operably connected to said combustion chamber for supplying a fuel gas and air mixture from a second supply port. |
