Abstract:
An electronic control device on an internal combustion engine side connected to an abnormal internal combustion engine detects an abnormality and outputs the abnormal signal; the target throttle opening angle signal is transmitted to the electric throttle actuator to set a throttle opening angle of an abnormal internal combustion engine to a predetermined opening angle; the abnormal signal is transmitted to the electronic control devices on a remote control device side of a normal internal combustion engine; and the electronic control devices on a remote control device side of a normal internal combustion engine, on receiving the abnormal signal, transmit the target throttle opening angle signal to the electronic control devices on an internal combustion engine side of a normal internal combustion engine.
Abstract:
A watercraft propelled by an outboard motor includes an inspection system. The inspection system includes a terminal computer that conducts an inspection of an engine control device and a control unit. The computer includes a program that performs an inspection process that provides the control device with a command signal to start an inspection of the control device and that requests the control device to output a first response signal. The process determines whether the response signal is consistent with a first specified signal. The process provides the control unit with a command signal to start an inspection of the control unit and requests the control unit to output a second response signal. The process determines whether the second response signal is consistent with a second specified signal. The control device controls a throttle actuator and a shift actuator based upon the second response signal and provides the inspection system with an operating signal. The process determines whether the operating signal is consistent with the second specified signal. The computer includes an indicator panel or other display device to show the results of the determinations made by the inspection process.
Abstract:
An engine control system for a watercraft includes a throttle valve or other engine output adjustment device. A control device controls the a state of the adjustment device (e.g., controls the position of the throttle valve). A controller is located remotely from the engine and provides the control device with an initial control amount to apply to the adjustment device. The control device determines an amount of engine load, preferably based upon signals from an adjustment device sensor (e.g., a throttle position sensor) that detects the state of the adjustment device (e.g., the position of the throttle valve) and an engine speed sensor. The control device stores a control map that has control amounts versus the initial control amounts and the engine load. The control device selects one of the control amounts using one of the initial control amounts and one of the engine loads.
Abstract:
A network system using a LAN to provide relative position data for a engine in a plurality of outboard motors attached to a watercraft and using that data to display engine condition information for each engine in the array of engines installed on the watercraft.
Abstract:
A watercraft has a throttle position sensor, an engine speed sensor, and a start switch. The sensors communicate with a controller. The controller can regulate engine speed. The controller regulates or limits the engine to a low speed when the throttle angle is above a predetermined value during startup, and/or when the engine temperature is too low.
Abstract:
A watercraft includes an anti-theft switch which disables the starter button and provides a kill signal to the engine, thereby preventing unauthorized use and inadvertent draining of the battery.
Abstract:
A fuel injection system for an internal combustion engine includes an improved control device for quickly starting the engine. The internal combustion engine includes at least one combustion chamber formed by at least a first member and a second member that moves relative to the first member. The second member is coupled to an output shaft such that movement of the second member causes the output shaft to rotate. A fuel injector supplies fuel to the combustion chamber. The fuel injector includes an actuator to regulate an amount of fuel injected by the fuel injector. The internal combustion engine further includes a fuel control system that comprises a controller, which is connected to the fuel injector actuator, and a sensor, which is arranged to detect rotation of the output shaft. The sensor is adapted to produce a signal that is indicative of rotation of the output shaft and is connected to the controller. The controller is configured to output a control signal to actuate the fuel injector actuator when a signal is received from the sensor indicating that the output shaft has initially begun to rotate.
Abstract:
An outboard motor comprises an engine mounted within an engine compartment. The engine comprises an induction system having a throttle valve that controls the flow of air through the induction system. The engine also comprises a fuel injection system that controls the amount of fuel supplied to the engine. The amount of fuel injected into the engine is substantially reduced if the throttle valve rapidly close and a transmission of the outboard motor is engaged. If the transmission of the outboard motor is disengaged when the throttle valve rapidly closes, the amount of fuel injected into the engine is reduced to a lesser degree.
Abstract:
An engine for a marine vehicle includes a controller having a predetermined map defining a relationship between a fuel injection parameter and an engine operation characteristic. Additionally, the controller includes at least one compensation factor for adjusting the fuel injection parameter. The compensation value is derived from data recorded during a test of the engine. The compensation factor is used during the normal operation of the engine to achieve a predetermined air/fuel ratio.
Abstract:
An engine control system includes an improved construction that can release an engine from an abnormal engine speed so that, for example, the operator can operate a shift actuator without any overload. The engine includes an air induction system that introduces air to the combustion chamber and includes a throttle valve. The throttle valve admits the air to flow through the air induction system unless placed in a closed position. A throttle valve position sensor is arranged to sense the position of the throttle valve. An engine speed sensor is also arranged to sense a rotational speed of the crankshaft. A control device is provided for slowing down the engine speed based upon a throttle position signal from the throttle valve position sensor and a speed signal from the engine speed sensor. In one operating mode, the slow down control is made when the throttle position signal indicates that the throttle valve is generally at the closed position and the speed signal indicates that the engine speed exceeds a preset speed.