Abstract: An aircraft propulsion system comprises an engine, a propeller drive shaft drivingly engaged with the engine, a propeller for propelling an aircraft and a fan driving cooling air along a flow path in thermal communication with the engine. The engine may be an internal combustion engine or other engine type having heat rejection requirements and the fan may facilitate cooling of the engine. The propulsion system may have a pusher configuration.

Abstract: An apparatus or system includes a component that generates or transfers noise having a frequency within a noise frequency range. The component may include a boundary. The apparatus or system may be an engine in some examples. The engine may additionally include a micro-perforated sheet positioned a distance from the boundary. The micro-perforated sheet may include a plurality of micro-perforated holes, and may be configured to absorb sound within an absorption frequency range based on parameters of the micro-perforated sheet. The parameters may include the distance from the boundary and dimensions of the micro-perforated holes, and may be set such that the absorption frequency range overlaps the noise frequency range.

Abstract: A hybrid intercooler system using multiple cooling media includes a first cooler for cooling air supercharged in a turbocharger using transmission oil, a second cooler for cooling the supercharged air passing through the first cooler using cooling water, and a third cooler for cooling the supercharged air passing through the second cooler using outdoor air.

Abstract: A composite structure forming a load bearing composite shell for a helicopter, with a shell which defines the exterior of a fuselage and includes a central fuselage section and tail boom, a fuselage which is adapted house an engine or drive train, a layered composite crashworthy seat and support structure and a fastening and a method of fastening by providing an adhesive between two layers which is allowed to flow through opposing holes in the layers to provide a chemical and mechanical attachment between the layers.

Abstract: A wheel loader includes an engine, an engine compartment, an injection device, a top plate and a first guide member. The injection device is disposed in the engine compartment. The top plate has a ventilation part. The ventilation part is disposed in a position horizontally away from the injection device. The first guide member has a guide body. The guide body is disposed along the top plate to direct air existing over the injection device to the ventilation part.

Abstract: A work machine includes: a vehicle body frame of the work machine; an engine mounted on the vehicle body frame; an engine cover covering over a top of the engine and fixed to the vehicle body frame via a column; a first exhausting device having a tubular appearance; a second exhausting device having a tubular appearance and having a function different from that of the first exhausting device; and a bracket holding the first exhausting device in an upper holding part and the second exhausting device in a lower holding part to attach them on a bottom surface of the engine cover.

Abstract: A construction machine includes: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct. A portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole.

Abstract: A new and improved combustion chamber and cooling system for a fastener-driving tool wherein a new and improved tangentially oriented, vortex induced fuel-injection system is operatively associated with the tool's combustion chamber. In addition, a new and improved trigger-controlled valve actuating system, such as, for example, a switch-operated, solenoid-actuated valve-controlling system, is incorporated within the tool so as to ensure the rapid operation of the intake and outlet valve structures. Still further, a sealed, liquid evaporative or liquid recirculating cooling system is integrally incorporated within the tool housing.

Abstract: A user interface method for a terminal for a vehicle is provided. The terminal obtains position information to detect a point of a road. A road image of a driving direction is obtained, a lanes of the road represented on the obtained road image is recognized, and a point of a road and lane in which the vehicle having the terminal arranged therein is detected. A virtual road image regarding the recognized lanes is generated, and the generated virtual lanes are added to the road image of the driving direction of the vehicle, and displayed. Traffic information for each lane and surrounding information (i.e. lane closure, construction, accident, etc.) at the detected point of the relevant road are obtained, and the obtained information is displayed for each virtual lane.

Abstract: In order to provide a handheld work machine that does not require expensive start circuitry for the critical start-up phase of the combustion engine, and in which nevertheless the required constant supply voltage for the engine is present in order to achieve optimum starting behavior, a handheld work machine is provided with at least one combustion engine which in operation requires a supply voltage, and with a voltage generator that supplies a generator voltage that depends on the rotary speed of the combustion engine, which generator voltage is used to generate the supply voltage, wherein the handheld work machine is electrically connected to an additional voltage source that prior to starting the combustion engine provides the required supply voltage that at this point in time is not yet present.

Abstract: A cooling system for an off-highway vehicle includes a heat exchanger (e.g., an engine coolant or hydraulic oil heat exchanger) and a fan mechanism for flowing air along a flow path through the heat exchanger. In the improvement, the fan mechanism is a centrifugal fan mechanism and is substantially the sole means for flowing air along the flow path. That is, there is substantially no ram-urged air. The mechanism includes a housing and a fan in the housing. The fan has forward curved blades, thereby to reduce system noise. A preferred fan has a depth-to-diameter ratio not in excess of about 0.4 and, most preferably, not in excess of about 0.25. An alternate embodiment includes what might be termed a split-discharge arrangement wherein air blown by the fan is discharged along two paths.