Marine powertrain and accessory power system with flywheel motor generator unit

A marine powertrain comprising:

• an engine having a rotatable output member;
• a motor generator drivably connected with said output member;
• a marine drive unit drivably connected with said output member;
• a marine propulsion member drivably connected with the marine drive unit;
• an AC-DC inverter connecting an AC output of the motor generator with a DC intermediate voltage battery;
• and
• a system controller operative to control charging of the battery from the motor generator and starting of the engine with battery power to the motor generator;
• wherein the engine includes variable displacement means for operating the engine with a reduced number of cylinders for increased efficiency when providing electric power.

A marine powertrain comprising:

• an engine having a rotatable output member;
• a motor generator drivably connected with said output member;
• a marine drive unit drivably connected with said output member;
• a marine propulsion member drivably connected with the marine drive unit;
• an AC-DC inverter connecting an AC output of the motor generator with a DC intermediate voltage battery;
• a system controller operative to control charging of the battery from the motor generator and starting of the engine with battery power to the motor generator;
• and
• a low voltage DC-DC converter connecting a low voltage battery with the intermediate voltage battery to charge the low voltage battery for operating low voltage loads of an associated watercraft.

A marine powertrain comprising:

• an engine having a rotatable output member;
• a motor generator drivably connected with said output member;
• a marine drive unit drivably connected with said output member;
• a marine propulsion member drivably connected with the marine drive unit;
• an AC-DC inverter connecting an AC output of the motor generator with a DC intermediate voltage battery;
• a system controller operative to control charging of the battery from the motor generator and starting of the engine with battery power to the motor generator;
• and
• a DC-AC inverter connected with the intermediate voltage battery to provide AC voltage for operating AC loads of appliances carried in an associated watercraft.

A marine powertrain comprising:

• an engine having a rotatable output member;
• a motor generator drivably connected with said output member;
• a marine drive unit connected with said output member;
• a marine propulsion member drivably connected with the marine drive unit;
• an AC-DC inverter connecting an AC output of the motor generator with a DC intermediate voltage battery;
• a system controller operative to control charging of the battery from the motor generator and starting of the engine with battery power to the motor generator;
• and
• a hydraulic electric power system connected with the AC-DC inverter and intermediate voltage battery, the power system including:
• an electric motor electrically connected with the intermediate voltage battery and AC-DC inverter
• a hydraulic pump drivably connected with the electric motor for driving the pump;
• a hydraulic manifold connected with the pump;
• and
• a plurality of selectively actuated hydraulic mechanisms connected to the manifold for actuation by hydraulic fluid from the manifold.

A marine powertrain comprising:

• an engine having a rotatable output member;
• a motor generator drivably connected with said output member;
• a marine drive unit drivably connected with said output member;
• a marine propulsion member drivably connected with the marine drive unit;
• an AC-DC inverter connecting an AC output of the motor generator with a DC intermediate voltage battery;
• a system controller operative to control charging of the battery from the motor generator and starting of the engine with battery power to the motor generator;
• wherein the AC-DC inverter provides a 36 volt DC output, a DC-DC converter provides a 12 volt DC output from the 36 volt DC output, and a DC-AC inverter provides one of 110 and 220 volt AC outputs from the 36 volt DC output.