公开(公告)号：US20040061421A1

公开(公告)日：2004-04-01

申请号：US10661568

申请日：2003-09-15

Applicant: DENSO CORPORATION ,  NIPPON SOKEN, INC.

Inventor： Hitoshi Morita ,  Shinichi Okabe ,  Takehiko Kato ,  Hiroshi Yorita ,  Keiji Kanao ,  Tetsuya Miwa

IPC: H01T013/20

CPC classification number: H01T13/39 ,  H01T13/20

Abstract: At least one of a center electrode tip and a ground electrode tip is made of an iridium alloy. A discharge gap, formed between the center electrode tip and the ground electrode tip, is less than 1.1 mm. And, cross sections of the center electrode tip and the ground electrode tip are equal to or smaller than 0.95 mm2 in a spherical region where a distance from a midpoint of the discharge gap is within 0.6 mm.

Abstract translation: 中心电极尖端和接地电极尖端中的至少一个由铱合金制成。 形成在中心电极尖端和接地电极尖端之间的放电间隙小于1.1mm。 并且，在距离放电间隙的中点的距离在0.6mm以内的球面区域中，中心电极端部和接地电极端部的截面为0.95mm 2以下。

公开(公告)号：US20040187854A1

公开(公告)日：2004-09-30

申请号：US10808476

申请日：2004-03-25

Applicant: DENSO CORPORATION

Inventor： Atsuya Mizutani ,  Tetsuya Miwa

IPC: F02P015/08

CPC classification number: F02P7/035 ,  F02P3/051 ,  F02P15/02 ,  F02P15/08

Abstract: The ignition device for an internal combustion engine includes two spark plugs provided for each cylinder, ignition coils arranged independently to each of the spark plugs, an ignition power source circuit for supplying electrical energy to first coils which constitute the ignition coils, and an ignition transistor circuit for switching on and off the electrical supply from the ignition power source circuit to the first coils. In the ignition device, the first coils corresponding to spark plugs that are provided to the same cylinder are connected in parallel with the ignition transistor circuit that is arranged to each cylinder. The ignition power source circuit is a circuit including an energy storage condenser for storing electrical energy supplied to the first coil. The electrical supply circuit is a circuit including an MOS-type field effect transistor.

Abstract translation: 用于内燃机的点火装置包括为每个气缸设置的两个火花塞，独立地布置到每个火花塞的点火线圈，用于向构成点火线圈的第一线圈供应电能的点火电源电路，以及点火晶体管 用于接通和断开从点火电源电路到第一线圈的电源的电路。 在点火装置中，对应于设置在同一气缸上的火花塞的第一线圈与布置在每个气缸上的点火晶体管电路并联连接。 点火电源电路是包括用于存储供应到第一线圈的电能的储能电容器的电路。 电源电路是包括MOS型场效应晶体管的电路。

公开(公告)号：US20040040535A1

公开(公告)日：2004-03-04

申请号：US10647214

申请日：2003-08-26

Applicant: Denso Corporation

Inventor： Tetsuya Miwa ,  Hideki Kawamura ,  Tomonari Chiba

IPC: F02P005/00

CPC classification number: F02P3/053 ,  F02P15/006 ,  F02P15/08

Abstract: During a multiple discharges operation, a micro computer changes a discharge period of each discharge in accordance with a pressure transition in a combustion chamber of an internal combustion engine. Thus, energy amount consumed at each discharge of multiple discharges operation is suppressed toward the minimum requirement, and consumption of energy accumulated in the ignition device is appropriately controlled. As a result, discharge energy is efficiently consumed at the multiple discharges, thereby compacting the ignition device. Further, the number of multiple discharges is not restricted.

Abstract translation: 在多次放电操作期间，微型计算机根据内燃机的燃烧室中的压力转变来改变每个排出口的排出周期。 因此，在多次放电操作的每次放电时消耗的能量被抑制到最小要求，并且适当地控制积聚在点火装置中的能量的消耗。 结果，在多次放电时有效地消耗放电能量，从而使点火装置压实。 此外，多次放电的次数不受限制。