The present invention provides a batteryless engine system comprising a first detection unit configured to detect a rotation speed of an internal combustion engine, a second detection unit configured to detect a voltage of a capacitor in which charges are accumulated, and a control unit operated by a power supplied from a generator and configured to control supply of a power from the generator to an injector, a fuel pump, and an ignition device based on the rotation speed detected by the first detection unit and the voltage detected by the second detection unit in a starting period of the internal combustion engine by a recoil starter.

An engine control and input system for a device having a tool driven by an engine, includes an input and control module having one or more inputs and a controller responsive to actuation of the inputs to permit user control of at least one engine operating parameter by user actuation of the inputs. The system may include a touch screen display that displays icons to the user relating to the inputs and the at least one engine operating parameter, and wherein the touch screen display is responsive to the user selecting one of the inputs by touching an associated one of the icons provided by the display. At least one of the inputs may relate to one or more of changing engine speed, starting the engine, causing the engine to drive the tool, turning on a light, actuating a heater or warmer or stopping engine operation.

A method of controlling operation of an engine includes providing power to a control module and/or a controller included in the control module, providing an engine start input where the engine start input is communicated with the controller, determining or detecting actuation of the engine start input, sending a signal from the controller to begin an engine starting procedure to start the engine, providing multiple engine operating mode inputs via the module, determining or detecting actuation of one of the engine operating mode inputs, and controlling the engine in accordance with one or more predetermined engine control instructions associated with the engine operating mode that is associated with the actuated engine operating input.

A system for controlling a throttle signal, as well as methods of assembling the same, is provided. Controlling the throttle signal includes activating a supply of power to an electronic control unit (ECU). A first throttle signal associated with a throttle position signal of a vehicle throttle is communicated. An initial gear state of the vehicle is determined. Based on the initial gear state of the vehicle, a modified throttle signal to the ECU is communicated in response to receiving a command signal. Based on determining a change in the gear state of the vehicle, terminating the communication of the modified throttle signal. A second throttle signal that is associated with a second throttle position signal of the vehicle throttle is communicated.

A hybrid vehicle may include an engine controller that determines an activation state of an oxygen sensor when the engine controller is requested to operate an engine and controls a voltage applied to the oxygen sensor depending on whether or not the oxygen sensor is in an activated state, and a vehicle controller that controls a voltage of a battery of the hybrid vehicle and applies the voltage of the battery to the engine controller. The engine controller outputs an activation demand signal for the oxygen sensor to be activated to the vehicle controller when it is determined that the oxygen sensor is not in the activated state.

The present invention provides a batteryless engine system comprising a first detection unit configured to detect a rotation speed of an internal combustion engine, a second detection unit configured to detect a voltage of a capacitor in which charges are accumulated, and a control unit operated by a power supplied from a generator and configured to control supply of a power from the generator to an injector, a fuel pump, and an ignition device based on the rotation speed detected by the first detection unit and the voltage detected by the second detection unit in a starting period of the internal combustion engine by a recoil starter.

The control device includes a microcomputer which controls operation of the internal combustion engine, a power regulator which outputs a direct current regulated voltage regulated from electric power of the AC generator, a 5V regulator which receives an output from the power regulator and supplies it to the microcomputer; a first capacitor with a small capacity connected to an output of the power regulator, plural second capacitors connected in parallel with the first capacitor; and plural opening and closing means connected in series to the plural second capacitors, respectively. The opening and closing means are controlled to be opened and closed by the microcomputer so that the second capacitors are charged when the output of the power regulator has reached an ON voltage below the regulated voltage.

In an outboard motor, one of an engine control unit and a power supply control unit is mounted on a first side surface of an engine, and the other of the engine control unit and the power supply control unit is mounted on an upper surface of the engine.

An illustrative embodiment of a fuel injector control system includes a driver that is configured to supply electrical power to a fuel injector. A controller is configured to control the driver according to a predetermined sequence of states for an injection cycle. The plurality of predefined states each include parameters for supplying electrical power to a fuel injector. Each of the states has a corresponding plurality of test parameters. At least one of the test parameters is a target parameter for the state. During each of the states, the controller determines whether at least one of the test parameters is met and determines how to control the driver for a subsequent portion of the injection cycle based on which of the test parameters is met.

A small air-cooled internal combustion engine includes an aluminum engine block including a cylinder extending along a longitudinal cylinder axis and a block mounting surface, a piston configured to reciprocate within the cylinder, a crankshaft coupled to the piston and configured to rotate about a crankshaft axis in response to reciprocation of the piston, and an aluminum crankcase cover including a cover mounting surface. The block mounting surface contacts the cover mounting surface. The block mounting surface and the cover mounting surface are both positioned at an angle to the crankshaft axis and the angle is not 90 degrees.