Membrane carburetor
AssigneeAndreas Stihl AG & Co. KG
InventorAndre Prager
Life of this patent
Estimating the term…
Abstract
A membrane carburetor (1) has a control chamber (13) which is connected via at least one fuel opening (9, 10) to an intake channel (3). The control chamber (13) is delimited by a control membrane (14). A fuel line (54) opens into the control chamber (13) via an inlet valve (15). The inlet valve (15) opens in dependence upon the deflection of the control membrane (14). The membrane carburetor (1) has an acceleration pump (30) which is actuated in dependence upon the position of a throttle element held in the intake channel (3). A good acceleration enrichment and a stable running of the internal combustion engine are achieved when the acceleration pump (30) operates hydraulically on at least one actuating member in the control chamber (13).
Claims22
A membrane carburetor comprising:
- a control chamber;
- an intake channel;
- at least one fuel opening connecting said control chamber to said intake channel;
- a deflectable control membrane delimiting said control chamber;
- fuel supply means for supplying fuel to said control chamber;
- said fuel supply means including an inlet valve;
- and, a fuel line opening into said control chamber via said inlet valve;
- said control membrane being operatively connected to said inlet valve so as to open said inlet valve in dependence upon deflections of said control membrane;
- a throttle element mounted in said intake channel so as to be moveable in position;
- an accelerator pump operatively connected to said throttle flap so as to be actuated in dependence upon the position of said throttle flap;
- said control chamber having an actuating member disposed therein;
- and,
- said accelerator pump being hydraulically connected to said actuating member so as to permit said accelerator pump to act hydraulically on said actuating member.
Dependencies are inferred from the claim text.