Claims
- 1. In a control system for an internal combustion engine having an intake passage, a fuel tank, a canister for adsorbing evaporative fuel generated from said fuel tank, and a purging passage connecting said canister and said intake passage for allowing said evaporative fuel to be purged therethrough into said intake passage, said engine being installed on an automotive vehicle, said control system including a purge control valve arranged in said purging passage for controlling a flow rate of said evaporative fuel purged through said purging passage into said intake passage, operating condition-detecting means for detecting operating conditions of said engine, and purging flow rate-controlling means for controlling said purge control valve depending on said operating conditions of said engine detected by said operating condition-detecting means,
- the improvement comprising:
- purging region-setting means for setting a purge control valve-enabling region in which said purge control valve is made operative, and a purge control valve-disabling region in which said purge control valve is made inoperative, based on said operating conditions of said engine, and
- purging inhibiting means for inhibiting operation of said purge control valve for a predetermined time period after said engine has shifted from said purge control valve-disabling region to said purge control valve-enabling region.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-36094 |
Feb 1993 |
JPX |
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Parent Case Info
This is a divisional of application Ser. No. 08/526,563 filed Sep. 12, 1995, now U.S. Pat. No. 5,546,922, which is a divisional of Ser. No. 08/187,469 filed Jan. 28, 1994, now U.S. Pat. No. 5,469,833.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
63-57841 |
Mar 1988 |
JPX |
Divisions (2)
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Number |
Date |
Country |
Parent |
526563 |
Sep 1995 |
|
Parent |
187469 |
Jan 1994 |
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