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Load drive device for internal combustion engine and ignition device for internal combustion engine

A load-driven, internal combustion engine technology, applied in the direction of a capacitor energy storage device, etc., to achieve the effect of suppressing overcurrent and protecting the circuit

Active Publication Date: 2018-12-07
DENSOTRIM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these prior art, once overvoltage is detected, then make ignition device stop working

Method used

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  • Load drive device for internal combustion engine and ignition device for internal combustion engine
  • Load drive device for internal combustion engine and ignition device for internal combustion engine
  • Load drive device for internal combustion engine and ignition device for internal combustion engine

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no. 1 Embodiment approach

[0026] figure 1 Shown is an internal combustion engine system 1 as one exemplary embodiment. The internal combustion engine system 1 has an internal combustion engine (ENG) 2 as a power source of the internal combustion engine system 1 . The internal combustion engine 2 is a spark ignition type internal combustion engine. The internal combustion engine 2 uses gasoline as fuel, the so-called gasoline engine. The internal combustion engine system 1 has an electrical generator (ACG) 3 driven by the internal combustion engine 2 . The generator 3 is an alternator. The internal combustion engine system 1 provides a generator system supplied with electric power by the generator 3 , and can also provide a power system for ground vehicles, ships, aircraft, construction machinery, and the like. In the present embodiment, the internal combustion engine system 1 is mounted on a small vehicle such as a motorcycle.

[0027] The internal combustion engine system 1 is configured as a pow...

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Abstract

Power is supplied to an ignition device 10 from a generator 3 driven by an internal combustion engine 2. The ignition device 10 is provided with a control device 17. When a power supply voltage VB is below a prescribed threshold voltage, the control device 17 drives a switching element 32 using a switching signal having a comparatively long ON time TonL. When the power supply voltage VB is above the prescribed threshold voltage, the control device 17 drives the switching element 32 using a switching signal having a comparatively short ON time TonS. The ON time TonL is longer than the ON time TonS. The short ON time TonS suppresses current flowing to a circuit that contains a transformer 31. Protection from excess voltage is thereby achieved while maintaining the ignition function.

Description

[0001] Cross-reference of related applications [0002] This application is based on Japanese Patent Application No. 2016-065773 filed on March 29, 2016, and the disclosure content of this basic application is incorporated by reference into this application technical field [0003] The present invention relates to a load drive device for an internal combustion engine and an ignition device for an internal combustion engine with a high voltage protection function. Background technique [0004] Patent Documents 1-4 disclose devices having a protection function. The protection device protects the power supply circuit of the generator when the generator driven by the internal combustion engine outputs overvoltage. In these prior art, once an overvoltage is detected, the ignition device is stopped. As a result, the output voltage of the generator drops and the circuit is protected. [0005] prior art literature [0006] patent documents [0007] Patent Document 1: JP-A-2004-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P3/08
CPCF02P3/08
Inventor 本直树
Owner DENSOTRIM CO LTD
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