Control device for engine having automatic stop and start function

• US 20010005807A1
• Filed: 12/14/2000
• Published: 06/28/2001
• Est. Priority Date: 12/14/1999
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Matsubara, Atsushi, Izumiura, Atsushi, Kitajima, Shinichi, Nakaune, Kan
• Granted Patent: US 6,529,818 B2
• Time in Patent Office: Days
• US Class Current: 701/112
• CPC Class Codes: F02N 11/0803 characterised by means for initiating engine start or stop F02N11/0814 takes precedence
• CPC Class Codes: F02N 11/10 Safety devices F02N11/08 takes precedence
• CPC Class Codes: F02N 2200/023 Engine temperature

Abstract

There is provided a control device for an engine including an automatic stop and start function, wherein detected data taken prior to an engine stop or results of an operation carried out based on the detected data are retained in executing an engine automatic stop control. In particular, in a case where the technology is applied to an engine including a thermostat proper operation determination function, a thermostat proper operation determination process is constructed so as to continue to be executed in executing an engine automatic stop control.

Claims

1. A control device for an engine having an automatic stop and start function, wherein

when an engine automatic stop control is executed, at least one of detected data taken prior to an engine stop and an operation result carried out based on said-detected data are retained.

2. The control device according to

claim 1

, further comprising:

a thermostat proper operation determination function,

wherein, when the engine automatic stop control is executed, a thermostat proper operation determination process is continuously executed.

3. The control device according to

claim 1

, wherein when said engine is in idling state, at least one of said detected data and said operation result are initialized.

4. An control method for an engine having an automatic stop and start function, comprising the steps of:

determining whether or not an engine automatic stop control is executed; and

initializing at least one of detected data taken prior to an engine stop and an operation result carried out based on said detected data,

wherein the engine automatic stop control is executed, said initializing step is jumped.

5. The control method according to

claim 4

, further comprising the step of:

determining whether or not said engine is in idling state,

wherein, when the engine automatic stop control is not executed and said engine is in idling state, said initializing step is executed.

6. The control method according to

claim 4

, further comprising the step of:

determining whether or not a thermostat is properly operated,

wherein, when the engine automatic stop control is executed, said thermostat properly operation determining step is continuously executed on the basis of at least one of said detected data and said operation result.