An 8 Stroke and 4 Stroke cycle change engine where alternate `air only` inductions are used under half load provided by alternate opening inlet valves operated by Electro-Magnetic, Electro-Hydraulic or other electrically controlled means and where the electronic control of the inlet valves can also open all inlet valves on all induction strokes to deliver more power in 4 stroke mode. The electronic control also allows for different inlet valve timings for each adjacent fuel/air 4 Stroke cycle an...

An internal combustion engine has a cylinder block 20 and is provided with an electrical equipment box A disposed outside the cylinder block 20. A plurality of electrical parts including an ECU 52, a relay box 53 and couplers 54, 55 and 56 are held in the electrical equipment box A. The ECU 52, the relay box 53 and the couplers 54, 55 and 56 are arranged in layers in the electrical equipment box A. The electrical equipment box A has a bottom wall 61 holding the relay box 53, and is provided with...

A synchronized, dual crankshaft engine (10) uses a phase-shifting device (42) to alter the angular position of one crankshaft (12) relative to the other crankshaft (14) for dynamically varying the engine's developed compression ratio. Each crankshaft (12, 14) drives a respective connecting rod (16, 18) which, in turn, reciprocates a piston (24, 26) in a cylinder (28, 30). The center lines (C, D) of each cylinder (28, 30) are skewed relative to each other so that the pistons (24, 26) converge tow...

In a combustion-powered fastener driving tool employing a fuel cell having an internal fuel metering valve with an axially reciprocating delivery stem, an actuator is provided for causing the dispensing of a desired dose of fuel from the fuel cell prior to each combustion event, the actuator including at least one actuator element configured for exerting an axial force on the stem, releasing the dose of fuel, and a fuel conduit associated with the element and being in fluid communication with th...

The present invention relates to a method of controlling an internal-combustion engine comprising at least one cylinder (10) with at least one burnt gas exhaust means (12) including an exhaust valve (16) whose opening/closing is controlled by control means (22) and an exhaust pipe (14) connected to an exhaust line (18, 20), at least two intake means (26, 28) comprising each a valve (32, 36) whose opening/closing is controlled by a dedicated actuating means (46, 48) and a pipe (30, 34). The metho...

A turbocharger, having an axial compressor wheel and an axial turbine wheel mounted on a first shaft supported by a housing, and a radial compressor wheel and a radial turbine wheel mounted on a second shaft, the second shaft concentrically extending around the first shaft and being supported by the housing. The housing defines a first duct extending axially from the exducer of the axial compressor to the inducer of the radial compressor, and a second duct extending axially from the exducer of t...

An exemplary compressor housing includes an axis to coincide with a rotational axis of a compressor wheel housed by the compressor housing, an inlet insert that includes an inlet port and a compressor wheel shroud portion that extends away from the inlet port to a ridge and a base component that defines, at least in part, a diffuser section and a scroll wherein the diffuser section extends radially outward to the scroll, wherein the ridge of the inlet insert defines, at least in part, an inlet t...

A combustion tool has a combustion-powered power source including a cylinder encircling a reciprocating piston associated with a driver blade, and having at least one air port located at a bumper end of said power source located below the piston. At least one air intake is in fluid communication with the power source and is provided with an associated air filter. At least one air passageway is provided in fluid communication with the at least one air port and in operational relationship with the...

A split-cycle air hybrid engine operatively connects an air reservoir to a split cycle engine. A power piston is received within a power cylinder and operatively connected to a crankshaft such that the power piston reciprocates through an expansion stroke and an exhaust stroke during a single revolution of the crankshaft. A compression piston is received within a compression cylinder and operatively connected to the crankshaft such that the compression piston reciprocates through an intake strok...

A fuel selection device is provided for allowing a user to connect the cylinders of an internal combustion engine to a user-selected fuel source. The fuel selection device includes a housing that defines a cavity for receiving a moveable selector therein. The selector defining first, second, third and fourth flow paths. The first and second flow paths are used for flowing a first type (e.g., natural gas) of fuel from a fuel source to the cylinders of the engine. The second and fourth flow paths ...