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Apparatus-for-controlling-an-internal-combustion-engine-for-vehicles

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Apparatus for controlling an internal combustion engine for vehicles

Details

Inventors: Arai, Kenji; Kurihara, Kazumasa; Oshizawa, Hidekazu;
Assignee: Diesel Kiki Co., Ltd. (Tokyo, JP)
Primary Examiner: Lall; Parshotam S.
Assistant Examiner: Ramirez; Ellis B.
Attorney, Agent or Firm: Pollock, Vande Sande & Priddy

In an apparatus for controlling an internal combustion engine for a vehicle provided with an electronically controlled automatic transmission system including a friction-type clutch and a gear-type transmission, the speed of the engine is controlled in accordance with a target speed determined by whether the clutch is engaged or not, and at the moment the clutch becomes engaged, the target engine speed gradually changes from the target speed for the disengaged condition of the clutch to that for the fully engaged condition of the clutch, whereby the mechanical shock occurring at the time of the engagement of the clutch is remarkably reduced.

DETAILED DESCRIPTION It is an object of the present invention to provide an improved apparatus for controlling an internal combustion engine for vehicles having an electronically controlled transmission system.
It is another object of the present invention to provide an apparatus for controlling an internal combustion engine for vehicles, which is capable of carrying out the automatic engaging operation of the friction-type clutch smoothly and at a high efficiency,w ithout employing the semi-engaging operation of the clutch.
According to the present invention, in an apparatus for controlling an internal combustion engine for a vehicle provided with an electronically controlled automatic transmission system including a friction-type clutch and a gear-type transmission,the apparatus comprises: means for producing condition data representing the operating condition of the vehicle; means responsive to the condition data for calculating second target data representing the amount of fuel injection necessary for operating the internal combustion engine at a reuired fixed speed in a predetermined specific speed control mode; means for producing a detection signal indicating the operating condition of the friction-type clutch; means responsive to the first and second target data and the detection signal for producing third target data representing a target amount of fuel injection which gradually changes from the fuel quantity represented by the second target data to the fuel quantity represented by the first target data with the passage of time when the friction-type clutch is changed-over from a disengaged state to an engaged state; a selecting means responsive to the first, second, and third target data and the detection signal for selecting one data from amongst the first, second and third target data according to the operating condition of the friction-type clutch; and means for controlling the amount of fuel supplied to the internal combustion engine in accordance with the target data selected by the selecting means

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