Disclosed are example embodiments of a diaphragm carburetor. Example embodiments includes: a pressure regulator; a fuel chamber for storing fuel to be introduced into an intake channel; a diaphragm; an atmospheric-pressure chamber partitioned by the diaphragm 100; a fuel supply channel that feeds the fuel, a return channel that is connected to the fuel supply channel and returns excess fuel that is not introduced into the fuel chamber to a fuel-tank side. The fuel is supplied into the intake channel while being adjusted to a predetermined pressure by the pressure regulator. The diaphragm carburetor also includes an opening and closing mechanism that opens at engine startup to allow the fuel to pass through and closes during normal driving to prevent the fuel from passing through.

Disclosed are example embodiments of a diaphragm carburetor. Example embodiments includes: a pressure regulator; a fuel chamber for storing fuel to be introduced into an intake channel; a diaphragm; an atmospheric-pressure chamber partitioned by the diaphragm 100; a fuel supply channel that feeds the fuel, a return channel that is connected to the fuel supply channel and returns excess fuel that is not introduced into the fuel chamber to a fuel-tank side. The fuel is supplied into the intake channel while being adjusted to a predetermined pressure by the pressure regulator. The diaphragm carburetor also includes an opening and closing mechanism that opens at engine startup to allow the fuel to pass through and closes during normal driving to prevent the fuel from passing through.

A needle valve body (220) has a needle hollow part (230) and a slit (232) extending in an axial direction and opened forward in a tip region. The carburetor body (B) has a body hole (202) receiving the needle valve body (220) in a longitudinally displaceable manner along an axis and a step-part circumferential edge (240a) formed in the body hole (202) and forming an orifice (250) with the slit (232) of the needle valve body (220). By operating the needle valve body (220) to adjust the size of the orifice (250), an amount of fuel supplied to a fuel discharge part (Fout) can be adjusted.

A carburetor with throttle shaft retainer system. The throttle shaft retainer system employs a retainer member in the form of a retainer pin or retainer clip that is pressed into the body of the carburetor to engage a retainer groove formed about or partially about the circumference of the throttle shaft. The interaction between the retainer member and the retainer groove prevents movement in the axial direction of the throttle shaft. With certain drilling and machined cuts to the throttle shaft, the retaining pin acts as the wide-open-throttle (WOT) stop when the throttle is rotated to a WOT position.

A carburetor with throttle shaft retainer system. The throttle shaft retainer system employs a retainer member in the form of a retainer pin or retainer clip that is pressed into the body of the carburetor to engage a retainer groove formed about or partially about the circumference of the throttle shaft. The interaction between the retainer member and the retainer groove prevents movement in the axial direction of the throttle shaft. With certain drilling and machined cuts to the throttle shaft, the retaining pin acts as the wide-open-throttle (WOT) stop when the throttle is rotated to a WOT position.

A method for controlling engine torque in a vehicle during a default throttle condition includes determining whether a throttle of the engine is in a default throttle condition, determining whether the engine is producing more torque than desired if the throttle of the engine is in the default throttle condition, and applying an accessory load to the engine if the engine is producing more torque than desired in the default throttle condition.

A carburetor for a gas powered internal combustion engine having a plurality of pressure reducing stages for reducing the pressure of the gas phase in a liquified petroleum gas storage bottle prior to the mixing of the gas phase of the liquified petroleum gas with ambient air.

A carburetor for a gas powered internal combustion engine having a plurality of pressure reducing stages for reducing the pressure of the gas phase in a liquified petroleum gas storage bottle prior to the mixing of the gas phase of the liquified petroleum gas with ambient air.

A carburetor with throttle shaft retainer system. The throttle shaft retainer system employs a retainer member in the form of a retainer pin or retainer clip that is pressed into the body of the carburetor to engage a retainer groove formed about or partially about the circumference of the throttle shaft. The interaction between the retainer member and the retainer groove prevents movement in the axial direction of the throttle shaft. With certain drilling and machined cuts to the throttle shaft, the retaining pin acts as the wide-open-throttle (WOT) stop when the throttle is rotated to a WOT position.

A carburetor with throttle shaft retainer system. The throttle shaft retainer system employs a retainer member in the form of a retainer pin or retainer clip that is pressed into the body of the carburetor to engage a retainer groove formed about or partially about the circumference of the throttle shaft. The interaction between the retainer member and the retainer groove prevents movement in the axial direction of the throttle shaft. With certain drilling and machined cuts to the throttle shaft, the retaining pin acts as the wide-open-throttle (WOT) stop when the throttle is rotated to a WOT position.