公开(公告)号：US20130192570A1

公开(公告)日：2013-08-01

申请号：US13648483

申请日：2012-10-10

Applicant: DENSO CORPORATION

Inventor： Yuji KAJITA ,  Masamichi SHIBATA ,  Yasuomi IMANAKA ,  Atsuya MIZUTANI ,  Tsutomu OOSUKA

IPC: F02P13/00

CPC classification number: F02P13/00 ,  F02P3/04 ,  F02P3/051 ,  F02P3/053 ,  F02P3/0838 ,  F02P3/0884 ,  F02P9/00 ,  F02P15/00

Abstract: An ignition apparatus is provided with a Zener diode as a limiter device, which limits a primary voltage of an ignition coil to be less than a Zener voltage, and a switching circuit, which prohibits a limiter function of the Zener diode at a start of discharge and switches the limiter device to perform the limiter function for a predetermined time period following the start of discharge. A secondary voltage is limited to be more than a secondary limit value. Even when blowout arises in discharging, re-discharging is avoided from arising immediately after the blowout and exhaustion of a spark plug caused by repetition of discharging is avoided.

Abstract translation: 点火装置设有齐纳二极管作为限制装置，其将点火线圈的初级电压限制为小于齐纳电压;以及开关电路，其在开始放电时禁止齐纳二极管的限幅器功能 并且在放电开始之后的预定时间段内切换限制器件以执行限制器功能。 次级电压被限制为大于次级限制值。 即使在排出时产生喷出，也避免了在由于重复放电引起的火花塞的喷出和排出之后立即产生再排放。

公开(公告)号：US20130200816A1

公开(公告)日：2013-08-08

申请号：US13758428

申请日：2013-02-04

Applicant: DENSO CORPORATION

Inventor： Masamichi SHIBATA ,  Yuji KAJITA ,  Atsuya MIZUTANI ,  Koichi HATTORI ,  Yasuomi IMANAKA

IPC: H01T13/44

CPC classification number: H01T13/44 ,  F02P3/0407 ,  F02P3/0552 ,  F02P9/002

Abstract: An ignition system is provided, which can restrict decreasing of constant-voltage duration of a spark plug and effectively prevents the occurrence of an accidental fire in an engine. A typical ignition system includes a secondary coil having one end connected to a positive side of a battery via a low-voltage side path and the other end connected to a center electrode via a connecting path which connects the secondary coil and the spark plug. A constant-voltage path having a grounded end is connected to the connecting path. A block diode is arranged between the secondary coil and a point where the constant-voltage path is connected with the connecting path. A Zener diode is disposed within the constant-voltage path. Each anode of the block diode and the Zener diode is mutually connected.

Abstract translation: 提供一种点火系统，其可以限制火花塞的恒定电压持续时间的降低，并有效地防止发动机中发生意外的火灾。 典型的点火系统包括一个次级线圈，其一端通过低压侧路径连接到电池的正极侧，另一端经由连接次级线圈和火花塞的连接路径连接到中心电极。 具有接地端的恒定电压路径连接到连接路径。 在次级线圈和恒定电压路径与连接路径连接的点之间布置有块二极管。 齐纳二极管设置在恒压通路内。 块二极管和齐纳二极管的每个阳极相互连接。