Control system for engines and automatic transmissions
First Claim
1. A control system for controlling both:
- an engine having a plurality of cylinders, a plurality of intake ports formed individually for said cylinders, a plurality of intake valves for opening or closing said intake ports individually for said cylinders, and a control valve for opening or closing one of the intake ports of each of said cylinders; and
an automatic transmission connected to said engine and having friction means to be engaged by an oil pressure regulated by pressure regulation means, comprising;
valve control means for opening said control valve, when an engine load is high, and for closing said control valve when the engine load is low;
air/fuel ratio control means for making an air/fuel ratio when said control valve is closed higher than that when said control valve is open; and
regulation level change means for changing a regulation level by said pressure regulation means in accordance with the ON/OFF state of said control valve.
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Accused Products
Abstract
A control system for controlling both: an engine having a plurality of cylinders, a plurality of intake ports formed individually for the cylinders, a plurality of intake valves for opening or closing the intake ports individually for the cylinders, and a control valve for opening or closing one of the intake ports of each of the cylinders; and an automatic transmission connected to the engine. The control system comprises: a valve controller for opening the control valve, when an engine load is high, and for closing the control valve when the engine load is low: an air/fuel ratio controller for making an air/fuel ratio when the control valve is closed higher than that when the control valve is open; and a shift inhibitor for inhibiting the shift in the automatic transmission till a predetermined time period elapses after the switching of the control valve.
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Citations
11 Claims
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1. A control system for controlling both:
- an engine having a plurality of cylinders, a plurality of intake ports formed individually for said cylinders, a plurality of intake valves for opening or closing said intake ports individually for said cylinders, and a control valve for opening or closing one of the intake ports of each of said cylinders; and
an automatic transmission connected to said engine and having friction means to be engaged by an oil pressure regulated by pressure regulation means, comprising;valve control means for opening said control valve, when an engine load is high, and for closing said control valve when the engine load is low; air/fuel ratio control means for making an air/fuel ratio when said control valve is closed higher than that when said control valve is open; and regulation level change means for changing a regulation level by said pressure regulation means in accordance with the ON/OFF state of said control valve. - View Dependent Claims (2, 3)
- an engine having a plurality of cylinders, a plurality of intake ports formed individually for said cylinders, a plurality of intake valves for opening or closing said intake ports individually for said cylinders, and a control valve for opening or closing one of the intake ports of each of said cylinders; and
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4. A control method of controlling both:
- an engine having a plurality of cylinders, a plurality of intake ports formed individually for said cylinders, a plurality of intake valves for opening or closing said intake ports individually for said cylinders, and a control valve for opening or closing one of the intake ports of each of said cylinders; and
an automatic transmission connected to said engine and having friction means to be engaged by an oil pressure regulated by pressure regulation means,wherein the improvement resides in that a regulation level by said pressure regulation means is changed in accordance with the ON/OFF state of said control valve. - View Dependent Claims (5)
- an engine having a plurality of cylinders, a plurality of intake ports formed individually for said cylinders, a plurality of intake valves for opening or closing said intake ports individually for said cylinders, and a control valve for opening or closing one of the intake ports of each of said cylinders; and
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6. A control system for controlling both:
- an engine capable of having its output characteristics changed in accordance with a running state to set a plurality of output torques for one throttle opening; and
an automatic transmission having a friction device for setting a gear stage and capable of controlling a regulation level of an oil pressure for engaging said friction device, comprising;output characteristic increase decide means for deciding a switching of the output characteristics of said engine from low to high output characteristics in accordance with a change in the running state; and regulation level change means for changing said regulation level to a level corresponding to said predetermined high output characteristics before the output characteristics of said engine are switched to said predetermined high output characteristics. - View Dependent Claims (7, 8, 9, 10, 11)
- an engine capable of having its output characteristics changed in accordance with a running state to set a plurality of output torques for one throttle opening; and
Specification