Output control device for generator

Abstract

Provided is an output control device for a generator, improving the startability of an engine by supplying sufficient voltage to a fuel supply system and an ignition system. In ST31, a crank angle [theta]clk is detected. In ST32, whether a piston of the engine is located at a compression top dead center or its vicinity or not is determined in accordance with the detected crank angle [theta]clk. When the crank angle [theta]clk has a relationship [theta]ref1<[theta]clk<[theta]ref2, that the piston is located at the compression top dead center or its vicinity (equivalent to a crank 0[deg.]) is determined, and proceed to ST33. In the ST33, a relatively larger ratio R1 is registered as an on-duty ratio Ron of a CPU pulse. When the ST 32 is not established, in ST34 a ratio R2 ( H02P 9 / 08 H02J 7 / 14 H02P 9 / 30 12 12 1 2004 / 7 / 9 1581674 2005 / 2 / 16 100345369 2007 / 10 / 24 2007 / 10 / 24 2007 / 10 / 24 Honda Motor Co., Ltd. Japan Nagatsuyu Toshiya Sakamoto Tomokazu li guiliang yang wu 11105 Japan 2003 / 7 / 31 204555 / 03

Description

technical field [0001] The present invention relates to an output control device of a generator capable of improving engine start performance, capable of supplying sufficient voltage to a fuel supply system and an ignition system even when the generated voltage is low when the engine is started. Background technique [0002] As a method for increasing the output voltage of a generator for supplying electric power to a fuel supply system load and other electric loads when the engine is started, it is known, for example, and disclosed in JP-A-8-51731 "Power Supply Device for Internal Combustion Engine". [0003] In FIG. 3 of the above-mentioned publication, a first power supply circuit 10 is disclosed, which has: connected to the generator coil Wp of the generator, powered by a MOSFET (F 1 ) (Metal Oxide Semiconductor Field Effect Transistor), MOSFET (F 2 ) and a boost rectifier circuit 10a composed of rectifier diodes D21, D22; connected to the DC output terminal t of the bo...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to sufficiently improve the starting performance of the engine only by increasing the power generation voltage when starting the engine.

[0010] In addition, when the power generation voltage is raised when the engine is started, the drive torque is increased to increase the power generation of the generator, and there is also a technical problem that a large pedaling force is required for a jerk start.

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