发明名称 |
Automatic choke |
摘要 |
A choke valve is controlled finely suited to the running state of an engine. A throttle valve (8) and a choke valve (9) are provided in series on an intake pipe (6), and the opening degree of the choke valve (9) is controlled by a stepping motor (11). A choke valve opening degree upon start of engine (start opening degree) and a driving pulse rate of a stepping motor (11) are determined depending on the engine temperature. When lower than the engine temperature TL, the pulse rate is set at first rate, or the lowest rate in a specified range. Depending on the engine temperature, the pulse rate is set higher gradually up to second rate TH. When releasing the choke gradually in warm-up operation, the pulse rate is lowered so as to obtain a choke opening degree of high precision by a high torque. <IMAGE>
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申请公布号 |
EP1574693(A1) |
申请公布日期 |
2005.09.14 |
申请号 |
EP20050005363 |
申请日期 |
2005.03.11 |
申请人 |
HONDA MOTOR CO., LTD. |
发明人 |
KAMIMURA, KENJI;ASAI, KOUICHI;ABE, HITOSHI;SAITO, RYO;NAKAMURA, MASASHI |
分类号 |
F02D11/10;F02D41/06;(IPC1-7):F02D41/06 |
主分类号 |
F02D11/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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