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US 6,964,259 B1Granted
Nonadjustable outboard motor throttle linkage
AssigneeBombardier Recreational Products Inc.
InventorRoger W. Raetzman
Life of this patent
Estimating the term…
Abstract
A throttle linkage for use with an internal combustion engine is disclosed which connects a throttle actuator to a throttle assembly. The throttle linkage is nonadjustable and interacts with a plurality of throttle stops integrally formed with an engine block. Such an arrangement prevents tampering in advanced two-stroke engines and ensures emission output at a level well below that allowed.
Claims29
A throttle linkage for an outboard motor comprising:
- an input end constructed to receive an operator throttle command initiated in a watercraft;
- an output end constructed to be directly connected to a throttle assembly of an engine disposed in an outboard motor;
- the throttle assembly having a throttle plate and a mechanical deadband between the output end and the throttle plate;
- and
- a lever assembly having a plurality of lever arms disposed between the input end and the output end, each lever arm and the lever assembly being free of any form of adjustment.
2 more elements
A throttle linkage for an engine comprising:
- a first link rotatably attached to an engine and having a permanently fixed range of rotation;
- an input arm integrally formed with the first link and connected to a throttle cable;
- a second link having a permanently fixed range of rotation and engageable by an output arm of the first link;
- a third link connected to an output arm of the second link and connected to a throttle assembly;
- and
- the throttle assembly having an actuator connected between the third link and a throttle plate wherein the actuator disengages the throttle plate from the third link during a portion of the permanently fixed range of rotation of the second link.
3 more elements
An internal combustion engine comprising:
- an engine block having at least one cylinder formed therein;
- a throttle stop extending from the engine block;
- a throttle assembly having an opening therethrough in fluid communication with the at least one cylinder;
- a throttle linkage connected to the throttle assembly and constructed to receive a throttle command, the throttle linkage having at least one link having an index integrally formed therewith and constructed to directly engage the at least one throttle stop;
- and
- a throttle plate rotalably positioned in the opening of the throttle assembly, the throttle plate disengaged from the throttle linkage during a portion of a range of movement of the throttle linkage,
- wherein the throttle linkage is free of any form of adjustment.
4 more elements
A method of manufacturing an engine comprising the steps of:
- forming a throttle link having a tab;
- forming an engine block with at least two throttle bosses;
- and
- attaching the throttle link to the engine with a permanently fixed range of movement and with the tab rotatably positioned between the at least two throttle bosses so that the tab engages one throttle boss when a throttle plate is at an idle position and engages the other throttle boss when the throttle plate is at a wide open throttle position.
1 more element
Dependencies are inferred from the claim text.