A system and method for synchronizing a frequency of plurality of variable frequency generators with a variable frequency load over a variable frequency bus independent of a frequency conversion stage. A synchronization controller is configured to determine an optimal bus frequency of the variable frequency bus based on at least one power demand requirement of the variable frequency load operatively connected to the variable frequency bus. With the optimal frequency, an available power range supplied by the plurality of variable frequency gensets at the optimal bus frequency can be determined. The synchronization controller then asymmetrically loads the variable frequency load to the plurality variable frequency gensets at the optimal bus frequency based on the operating range of each variable frequency genset and recursively updates the optimal bus frequency based on operational statistics of the asymmetrically loaded variable frequency gensets.

Various methods of control of combustion knock are disclosed in relation to a spark ignition, internal combustion engine having active tappets, whereby an inlet poppet valve can be moved independently of the usual operating cam. In one embodiment the invention provides for combustion knock to be controlled solely by variation of inlet air charge.

Various methods of control of combustion knock are disclosed in relation to a spark ignition, internal combustion engine having active tappets, whereby an inlet poppet valve can be moved independently of the usual operating cam. In one embodiment the invention provides for combustion knock to be controlled solely by variation of inlet air charge.

The purpose of the present invention is to reduce a load of preventing dew condensation, and to provide a highly reliable humidity detection device. In order to achieve the purpose, this humidity detection device is provided with: a humidity sensor having a humidity detection unit and a temperature detection unit; a heating resistor that heats the humidity sensor; and a heating control unit that controls a heating temperature of the heating resistor. The humidity detection device is characterized in having a target temperature storage unit that stores target temperatures of the heating resistor, said target temperatures having been determined corresponding to temperatures and humidities.

The purpose of the present invention is to reduce a load of preventing dew condensation, and to provide a highly reliable humidity detection device. In order to achieve the purpose, this humidity detection device is provided with: a humidity sensor having a humidity detection unit and a temperature detection unit; a heating resistor that heats the humidity sensor; and a heating control unit that controls a heating temperature of the heating resistor. The humidity detection device is characterized in having a target temperature storage unit that stores target temperatures of the heating resistor, said target temperatures having been determined corresponding to temperatures and humidities.

A side-by-side off-road utility vehicle comprising a vehicle operational status switch for controlling the operational status of the vehicle, a side-by-side seating structure, a plurality of safety restraint devices operable to retain one or more vehicle passenger in the side-by-side seating structure, and a prime mover RPM controller. The prime mover RPM controller operable to output commands to the one or more prime mover of the vehicle to limit a rotational speed of the prime mover(s) when the vehicle is in an On operational status and a selected one or more of the one or more safety restraints is in a disengaged status.

A side-by-side off-road utility vehicle comprising a vehicle operational status switch for controlling the operational status of the vehicle, a side-by-side seating structure, a plurality of safety restraint devices operable to retain one or more vehicle passenger in the side-by-side seating structure, and a prime mover RPM controller. The prime mover RPM controller operable to output commands to the one or more prime mover of the vehicle to limit a rotational speed of the prime mover(s) when the vehicle is in an On operational status and a selected one or more of the one or more safety restraints is in a disengaged status.

The present invention relates to an internal combustion engine arrangement (100, 00) comprising: a combustion cylinder provided with a reciprocating piston movable between a top dead center (TDC) and a bottom dead center (BDC) within the combustion cylinder; a first outlet valve (102) connected to the combustion cylinder for controllably directing exhaust gas from the combustion cylinder to a first exhaust gas manifold of the internal combustion engine arrangement; a second outlet valve (104, 104) connected to the combustion cylinder for controllably directing exhaust gas from the combustion cylinder to a second exhaust gas manifold of the internal combustion engine arrangement; a turbocharger arrangement (106) comprising a turbine (108) and a compressor (110), wherein the turbine (108) is arranged in fluid communication with the first exhaust gas manifold; and an exhaust emission control device (112,112) arranged in fluid communication with the second exhaust gas manifold, wherein the exhaust emission control device and the turbine are arranged in parallel with each other.

The present invention relates to an internal combustion engine arrangement (100, 00) comprising: a combustion cylinder provided with a reciprocating piston movable between a top dead center (TDC) and a bottom dead center (BDC) within the combustion cylinder; a first outlet valve (102) connected to the combustion cylinder for controllably directing exhaust gas from the combustion cylinder to a first exhaust gas manifold of the internal combustion engine arrangement; a second outlet valve (104, 104) connected to the combustion cylinder for controllably directing exhaust gas from the combustion cylinder to a second exhaust gas manifold of the internal combustion engine arrangement; a turbocharger arrangement (106) comprising a turbine (108) and a compressor (110), wherein the turbine (108) is arranged in fluid communication with the first exhaust gas manifold; and an exhaust emission control device (112,112) arranged in fluid communication with the second exhaust gas manifold, wherein the exhaust emission control device and the turbine are arranged in parallel with each other.

An air flow measurement device that measures an air flow rate based on an output value of a sensing unit attached in an environment in which air flows, the air flow measurement device is provided. The air flow measurement device may calculate an average air amount, which is an average value of the air flow rate, from the output value. The air flow measurement device may calculate a pulsation maximum value, which is a maximum value of the air flow rate, from the output value.