Supercharger control in automobile engine system
First Claim
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1. A supercharger control in an automobile engine which comprises, in combination:
- an intake passage for the introduction of air to the engine;
an air pump disposed in the intake passage for supercharging air flowing therethrough towards the engine;
a bypass passage bypassing only the air pump;
a control valve disposed in the bypass passage for controlling the effective cross-sectional area of the bypass passage;
a pump drive means;
means for causing the control valve to reduce the effective cross-sectional area of the bypass passage during the operation of the air pump;
a load detector for detecting, and generating a load signal indicative of, the load on the engine;
a control means responsive to the load signal, when the load on the engine increases, for activating the pump drive means to operate the air pump when the load on the engine exceeds a predetermined value;
means for detecting the degree of requirement for acceleration; and
means operable in response to an output from the detecting means to vary a pump operating load, at which the air pump is to be operated, in such a way as to render the pump operating load to be lower in the case where the degree of requirement for acceleration is great than in the case where the degree of requirement for acceleration is small.
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Abstract
A supercharger control in an automobile engine comprising an intake passage having an air pump for supercharging air to be fed to the engine, a bypass passage bypassing the air pump and having a control valve for opening and closing the bypass passage, an electromagnetic clutch for selectively coupling and decoupling the air pump with and from an output shaft of the engine, and a control device for controlling both the air pump and the control valve in dependence on the degree of requirement for acceleration represented by the load on the engine or the position of an automobile transmission.
23 Citations
9 Claims
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1. A supercharger control in an automobile engine which comprises, in combination:
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an intake passage for the introduction of air to the engine; an air pump disposed in the intake passage for supercharging air flowing therethrough towards the engine; a bypass passage bypassing only the air pump; a control valve disposed in the bypass passage for controlling the effective cross-sectional area of the bypass passage; a pump drive means; means for causing the control valve to reduce the effective cross-sectional area of the bypass passage during the operation of the air pump; a load detector for detecting, and generating a load signal indicative of, the load on the engine; a control means responsive to the load signal, when the load on the engine increases, for activating the pump drive means to operate the air pump when the load on the engine exceeds a predetermined value; means for detecting the degree of requirement for acceleration; and means operable in response to an output from the detecting means to vary a pump operating load, at which the air pump is to be operated, in such a way as to render the pump operating load to be lower in the case where the degree of requirement for acceleration is great than in the case where the degree of requirement for acceleration is small. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification