Methods, systems, and vehicles that control the temperature of a device included in the vehicle are presented herein. The temperature of the device is controlled by ventilating the device with drivetrain air, such as transmission cooling air. In some embodiments, the device is at a greater temperature than the drivetrain air, which cools the device. In other embodiments, the device is at a lesser temperature than the drivetrain air, which heats the device. The drivetrain air is provided to the device through an exhaust duct coupled to the vehicle's transmission. The drivetrain exhaust air is preferably circulated by the transmission. The transmission may be a continuously variable transmission. The device may be an oxygen sensor that is coupled to an engine exhaust pipe. The oxygen sensor is thermally coupled to the engine exhaust and the engine exhaust pipe, which are at greater temperatures than the transmission exhaust air.

A work vehicle such as a tractor including a cooling fan (12a) arranged in front of the vehicle's engine main body (1), and is configured to feed air to the engine main body. The work vehicle further includes a DPF (19), which is arranged on one side of the engine main body and purifies exhaust gas exhausted from the engine main body, and an engine hood (7), which covers the engine main body, the cooling fan, and the DPF. An outside air intake port (21) is formed in both side surfaces of the engine hood at a position further forward than the cooling fan. On both side surfaces of the engine hood, a first opening (30) capable of exhausting air inside the engine hood in a direction away from the vehicle's operation seat in side view is formed in a position facing the DPF in the lateral direction.

A system for cooling an exhaust system of a construction machine. The system has a compartment within which the exhaust system is contained. A first compartment wall forms an external boundary of the compartment and has a plurality of air inlets proximate the exhaust system. A fan assembly is also within the compartment and separated from the exhaust system by a barrier. A conduit crosses the barrier and has an inlet near the exhaust system and an outlet positioned between the barrier and the fan assembly. Air flows within the compartment along an air flow path that extends from the air inlets, around the exhaust system, through the conduit and into the fan assembly. The air flow path extends from the fan assembly through a plurality of air outlets formed in an external compartment wall.

A cooling system for cooling a component on a farm machine according to the present disclosure can include a rotary blower and a manifold. The rotary blower can include a housing and have a first rotor and a second rotor rotatably disposed in the housing. The first and second rotors can have meshed lobes for transporting air from an inlet port to an outlet port. The rotary blower can further include a first rotor shaft and a second rotor shaft rotatably supported by the housing and having first and second rotors, respectively, fixed for rotation therewith. The manifold can direct the air from the rotary blower onto the component of the farm machine.

The present application provides a fire prevention shield for an internal combustion engine. The shield includes a shield baffle plate and a mounting means adapted to mount the shield baffle plate at a predetermined position with respect to a muffler of the engine, such that an air passage is located between the muffler and the shield baffle plate, the air passage having an air inlet opening located adjacent to the engine, wherein a cross-sectional area of the air passage is greatest at or near the air inlet opening.

Methods, systems, and vehicles that control the temperature of a device included in the vehicle are presented herein. The temperature of the device is controlled by ventilating the device with drivetrain air, such as transmission cooling air. In some embodiments, the device is at a greater temperature than the drivetrain air, which cools the device. In other embodiments, the device is at a lesser temperature than the drivetrain air, which heats the device. The drivetrain air is provided to the device through an exhaust duct coupled to the vehicle's transmission. The drivetrain exhaust air is preferably circulated by the transmission. The transmission may be a continuously variable transmission. The device may be an oxygen sensor that is coupled to an engine exhaust pipe. The oxygen sensor is thermally coupled to the engine exhaust and the engine exhaust pipe, which are at greater temperatures than the transmission exhaust air.

When a user requests start-up of an internal combustion engine while PM removal control is in execution or immediately after execution of the PM removal control is completed, an electronic control unit informs the user of the vehicle of a first alarm, so that the user recognizes that the internal combustion engine cannot be started up immediately. This makes it possible to suppress the discomfort caused because the internal combustion engine is not started up.

An engine includes an exhaust gas purification device for treating exhaust gas. The exhaust gas purification device is arranged on the upper surface side of the engine. Regarding structure in which an exhaust throttle device is provided in an installation portion of an exhaust manifold on one side of the engine, the exhaust throttle device is inclined and disposed with respect to the right side surface of the engine in a plan view, and a gap is formed between the right side surface of a head cover and the inner side surface of the exhaust throttle device.

An exhaust infrared signature reduction arrangement includes an exhaust duct, a first vane support disposed within the exhaust duct and a second vane support disposed within the exhaust duct downstream from the first vane support. The first vane support and the second vane support are movable between a first configuration and a second configuration.

Methods, systems, and vehicles that control the temperature of a device included in the vehicle are presented herein. The temperature of the device is controlled by ventilating the device with drivetrain air, such as transmission cooling air. In some embodiments, the device is at a greater temperature than the drivetrain air, which cools the device. In other embodiments, the device is at a lesser temperature than the drivetrain air, which heats the device. The drivetrain air is provided to the device through an exhaust duct coupled to the vehicle's transmission. The drivetrain exhaust air is preferably circulated by the transmission. The transmission may be a continuously variable transmission. The device may be an oxygen sensor that is coupled to an engine exhaust pipe. The oxygen sensor is thermally coupled to the engine exhaust and the engine exhaust pipe, which are at greater temperatures than the transmission exhaust air.