Abstract: A nitrous oxide system for an internal combustion engine includes a bottle containing pressurized nitrous oxide coupled to a nitrous oxide flow line, which is in fluid communication with an injection nozzle operatively coupled to the engine intake. A control valve is fluidly coupled to the nitrous oxide flow line between the nitrous oxide bottle and the injection nozzle, and is operable to control the flow of nitrous oxide through the nitrous oxide flow line to the engine intake. A methanol injection line is in fluid communication with a source of supplemental methanol, and a methanol valve is fluidly coupled to the methanol injection line and operably coupled to the nitrous oxide flow line, such that a flow of pressurized nitrous oxide through the nitrous oxide flow line opens the methanol valve to allow a flow of supplemental methanol to the engine intake.

Abstract: A nitrous oxide system for an internal combustion engine includes a bottle containing pressurized nitrous oxide coupled to a nitrous oxide flow line, which is in fluid communication with an injection nozzle operatively coupled to the engine intake. A control valve is fluidly coupled to the nitrous oxide flow line between the nitrous oxide bottle and the injection nozzle, and is operable to control the flow of nitrous oxide through the nitrous oxide flow line to the engine intake. A supplemental fuel line in fluid communication with a secondary source of fuel with respect to the primary fuel line, and a supplemental fuel valve is fluidly coupled to the supplemental fuel line and operably coupled to the nitrous oxide flow line, such that a flow of pressurized nitrous oxide through the nitrous oxide flow line opens the supplemental fuel valve to allow a secondary flow of fuel to the engine intake.

Abstract: A nitrous oxide system for an internal combustion engine includes a bottle containing pressurized nitrous oxide coupled to a nitrous oxide flow line, which is in fluid communication with an injection nozzle operatively coupled to the engine intake. A control valve is fluidly coupled to the nitrous oxide flow line between the nitrous oxide bottle and the injection nozzle, and is operable to control the flow of nitrous oxide through the nitrous oxide flow line to the engine intake. A methanol injection line is in fluid communication with a source of supplemental methanol, and a methanol valve is fluidly coupled to the methanol injection line and operably coupled to the nitrous oxide flow line, such that a flow of pressurized nitrous oxide through the nitrous oxide flow line opens the methanol valve to allow a flow of supplemental methanol to the engine intake.

Abstract: A nitrous-oxide system for an internal combustion engine includes a nitrous-oxide bottle containing nitrous-oxide coupled to a nitrous-oxide line. A nozzle can be coupled to the nitrous-oxide line, and operatively coupled to an engine intake. A pair of solenoids is operably coupled in series to the nitrous-oxide line between the nitrous-oxide bottle and the nozzle. The solenoids can be operable to control the flow of nitrous oxide through the nitrous oxide line to an engine intake. A control switch is operatively coupled to the pair of solenoids to selectively activate at least one of the pair of solenoids to close the at least one solenoid and stop nitrous oxide from flowing through the nitrous oxide line.

Abstract: A nitrous oxide system for an internal combustion engine includes a bottle containing pressurized nitrous oxide coupled to a nitrous oxide flow line, which is in fluid communication with an injection nozzle operatively coupled to the engine intake. A control valve is fluidly coupled to the nitrous oxide flow line between the nitrous oxide bottle and the injection nozzle, and is operable to control the flow of nitrous oxide through the nitrous oxide flow line to the engine intake. A supplemental fuel line in fluid communication with a secondary source of fuel with respect to the primary fuel line, and a supplemental fuel valve is fluidly coupled to the supplemental fuel line and operably coupled to the nitrous oxide flow line, such that a flow of pressurized nitrous oxide through the nitrous oxide flow line opens the supplemental fuel valve to allow a secondary flow of fuel to the engine intake.

Abstract: A snowmobile seat configured to be disposed over a track tunnel of a snowmobile includes a base section including closed-cell foam configured to be disposed over the track tunnel of the snowmobile. A seat section including open-cell foam is disposed over at least a portion of the base section. The open-cell foam of the seat section is different than the closed-cell foam of the base section. A cover covers at least a portion of the seat section and the base section. At least one fastener secures the seat to the snowmobile.

Abstract: A snowmobile seat configured to be disposed over a track tunnel of a snowmobile includes a base section including closed-cell foam configured to be disposed over the track tunnel of the snowmobile. A seat section including open-cell foam is disposed over at least a portion of the base section. The open-cell foam of the seat section is different than the closed-cell foam of the base section. A cover covers at least a portion of the seat section and the base section. At least one fastener secures the seat to the snowmobile.

Abstract: A snowmobile seat with a substantially rigid foam base disposed over a track tunnel of a snowmobile. A flexible seat section is disposed over at least a portion of the rigid base. The flexible seat section is formed of an open cell foam that is different than the substantially rigid foam base, and has an upper surface. A seat cover covers at least a portion of the flexible seat section and extends under the rigid foam base to cover at least a portion of the rigid foam base. At least one fastener is disposed on a portion of the seat cover extending under the rigid foam base to removably secure the seat cover to the snowmobile.

Abstract: A nitrous-oxide system for an engine includes a nozzle coupled to a nitrous-oxide bottle by a nitrous oxide line. A nitrous-oxide valve is coupled to the nitrous-oxide line between the nitrous-oxide bottle and the nozzle. A control switch, operatively coupled to the nitrous-oxide valve. A pressure regulator, coupled to the nitrous-oxide line between the nitrous-oxide bottle and the nozzle, and is capable of regulating pressure of the nitrous-oxide. The nozzle can be positioned adjacent a carburetor inlet to force nitrous-oxide into a carburetor throat.

Abstract: A snowmobile seat with a substantially rigid foam base disposed over a track tunnel of a snowmobile. A flexible seat section is disposed over at least a portion of the rigid base. The flexible seat section is formed of an open cell foam that is different than the substantially rigid foam base, and has an upper surface. A seat cover covers at least a portion of the flexible seat section and extends under the rigid foam base to cover at least a portion of the rigid foam base. At least one fastener is disposed on a portion of the seat cover extending under the rigid foam base to removably secure the seat cover to the snowmobile.

Abstract: A snowmobile seat a flexible seat section disposed over a substantially rigid base that is disposed over an upper surface of a track tunnel of a snowmobile. The rigid base is formed of a closed cell foam with cell walls and cell voids such that the base section is substantially rigid and light weight, while the flexible seat section is formed of an open cell foam. A cover covers at least the flexible seat section to resist absorption of water by the open cell foam of the flexible seat section. The cover can include an upper seat cover and a lower seat cover coupled by a zipper.

Abstract: A snowmobile seat a flexible seat section disposed over a substantially rigid base that is disposed over an upper surface of a track tunnel of a snowmobile. The rigid base is formed of a closed cell foam with cell walls and cell voids such that the base section is substantially rigid and light weight, while the flexible seat section is formed of an open cell foam. A cover covers at least the flexible seat section to resist absorption of water by the open cell foam of the flexible seat section. The cover can include an upper seat cover and a lower seat cover coupled by a zipper.

Abstract: A snowmobile seat a flexible seat section disposed over a substantially rigid base that is disposed over an upper surface of a track tunnel of a snowmobile. The rigid base is formed of a closed cell foam with cell walls and cell voids such that the base section is substantially rigid and light weight, while the flexible seat section is formed of an open cell foam. A cover covers at least the flexible seat section to resist absorption of water by the open cell foam of the flexible seat section. A storage cavity can be formed in the rigid base section to receive items for storage. The closed cell foam is formed around at least a portion of the storage cavity to thermally insulate the storage cavity. A flap can be coupled to the cover and removably positioned over an opening into the storage cavity. Zippers can be formed on opposite sides of the flap to releasably secured to the cover to selectively maintain the flap over the opening into the storage cavity.

Abstract: A snowmobile seat includes first and second fasteners to mount a base section on a snowmobile. The first and second fasteners may include hook-and-loop type fasteners and snap type fasteners coupled between the base section and the snowmobile. The hook-and-loop type fasteners are coupled between the base section and the snowmobile to resist horizontal movement between the base section and the snowmobile, and to maintain a connection between the snap type fasteners. The snap type fasteners are coupled between the base section and the snowmobile to resist vertical movement between the base section and the snowmobile, and to maintain a connection between the hook-and-loop type fasteners. The seat also may include a space defining an air chamber formed between a seat section and the base section. The seat section displaces into the air chamber as the user sits on the seat to provide additional cushioning.

Abstract: A light-weight snowmobile seat has a rigid base section for mounting on a snowmobile. The base section has a closed-cell structure with cell walls and cell voids such that the base section is substantially light-weight. The closed-cell structure also resists absorbing water, insulates the rider from heat generated by the snowmobile, and muffles noise created by the snowmobile. The snowmobile seat has a flexible seat section for providing a cushioned seat. A space defining an air chamber is formed between the seat section and the base section. An air passage extends from the air chamber to allow air to exit. The seat section displaces into the air chamber as the user sits on the seat expelling air out through the air passage. Thus, the air chamber provides additional cushioning, and air is drawn into the seat as the user stands and expelled as the user sits, thus cycling air to help keep the seat dry. The snowmobile seat also has a waterproof cover for covering the base section and seat section.

Abstract: A light-weight vehicle seat, particularly well suited for snowmobiles, has a rigid base section for mounting on a vehicle. The base section has a closed-cell structure with cell walls and cell voids such that the base section is substantially light-weight. The closed-cell structure also resists absorbing water, insulates the rider from heat generated by the vehicle, and muffles noise created by the vehicle. The vehicle seat has a flexible seat section for providing a cushioned seat. The vehicle seat also has a waterproof cover for covering the base section and seat section. The vehicle seat is preferably attached to the vehicle with hook-and-loop type fasteners. A utility cavity is formed in the seat. Alternatively, the seat section may be removably disposed on the base section and seat sections of various flexibility provided to suit the weight of the rider.