空打ち

05:39 Jul 27, 2011
This question was closed without grading. Reason: Answer found elsewhere

Japanese to English translations [PRO]
Tech/Engineering - Automotive / Cars & Trucks
Japanese term or phrase: 空打ち
This term is used in a document about a fuel injector.
空打ち作動 is the name of a test, and next to that it gives the test conditions, temperature, pressure, etc.

I have not been able to find a translation for 空打ち that applies to this automotive context. Can anyone help?

I did find this document in Japanese, which seems to be a similar automotive context.

http://www.patentjp.com/13/O/O100007/DA10179.html

Thank you.
conejo
United States
Local time: 16:49


Summary of answers provided
2cold blow
Tatsuo Detake


  

Answers


1 hr   confidence: Answerer confidence 2/5Answerer confidence 2/5
cold blow


Explanation:
I wonder if you have checked the English abstract of the docume t in Japanese in a similar context by further conducting PAJ search on IPDL, where the abstract of this document by Denso is translated as follows:

インジェクタ駆動回路
要約
マイクロコンピュータの処理負荷を軽減しつつ、コモンレール内の燃料圧力を効率良く減圧することができるインジェクタ駆動回路を提供する。
【解決手段】コモンレール式燃料噴射システムにおいて、マイコン151は、機関運転状態に応じてインジェクタ101~104の駆動信号を生成すると共に、コモンレール圧を減圧するかしないかを判定する。駆動回路100は、マイコン151からの駆動信号に基づきトランジスタT10~T40をオンし、インジェクタ101~104を駆動する。また、駆動回路100は、マイコン151からの空打ち要求に際し、インジェクタ101~104のソレノイド101a~104aに流れる電流値に基づき、実際には燃料噴射を行わない程度に小さい電流域でトランジスタT10~T40をオン/オフし、インジェクタ101~104による空打ちを実施してコモンレール圧を減圧する。

INJECTOR DRIVING CIRCUIT
Abstract:
PROBLEM TO BE SOLVED: To efficiently carry out pressure reduction of fuel pressure within a common rail while reducing processing load of a microcomputer.
SOLUTION: In a common rail type fuel injection system, the microcomputer 151 generates drive signals of injectors 101 to 104 in response to an engine operation state, and determines whether pressure reduction of a common rail pressure is carried out or not. A drive circuit 100 turns ON transistors T10 to T40 and drives the injectors 101 to 104 based on the drive signals from the microcomputer 151. Upon request of cold blow from the microcomputer 151, the drive circuit 100 turns ON/OFF the transistors T10 to T40 in a small current region in which a fuel injection is not actually carried out, based on a current value flowing in a solenoids 101a to 104a of the injectors 101 to 104, and the cold blow by the injectors 101 to 104 is performed thereby reducing the common rail pressure.

As I haven't conducted any other search myself, nor have no expertise in this field, I am not so sure about my answer.



Tatsuo Detake
Japan
Local time: 07:49
Works in field
Native speaker of: Japanese
PRO pts in category: 4
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