THROTTLE-POSITION SENSOR FOR AN ELECTRONIC FUEL-INJECTION SYSTEM
    1.
    发明申请
    THROTTLE-POSITION SENSOR FOR AN ELECTRONIC FUEL-INJECTION SYSTEM 审中-公开
    用于电子燃油喷射系统的节气门位置传感器

    公开(公告)号:WO8804361A3

    公开(公告)日:1988-07-14

    申请号:PCT/US8703121

    申请日:1987-11-24

    Applicant: BRUNSWICK CORP

    CPC classification number: F02D41/28 F02D2200/0404

    Abstract: Interpreted intake-manifold vacuum and engine speed are used to produce an electrical output signal that reflects throttle position. Since the device has no mechanical tie to the throttle, there is none of the hysteresis or mechanical wear that are characteristic of conventional throttle-position sensors. The device comprises a tachometer circuit which is modulated by the signal from a differential-pressure transducer, connected to track the instantaneous hydraulic pressure drop across the engine throttle. The tachometer output controls the duty cycle of a pulse generator which , in turn, drives an ouput transistor; a reference potential is applied across the load resistor and emitter of this output transistor, and the output signal is obtained as a d-c control signal, upon filtering the signal from the collector of the output transducer. The transfer function of the device yields maximum output when there is little or no intake vacuum, e.g., at sustained high speed, and minimum output is obtained from minimum speed and maximum vacuum.

    2.
    发明专利
    未知

    公开(公告)号:BR8707930A

    公开(公告)日:1989-10-31

    申请号:BR8707930

    申请日:1987-12-14

    Applicant: BRUNSWICK CORP

    Abstract: A resistance switching circuit is toggled immediately prior to cranking but subsequent to power application by the output of a manifold absolute pressure sensor effectively responding to ambient atmospheric pressure as indicative of altitude. The switching circuit is connected in series with the resistance element of the potentiometer which serves as the throttle control and alters the transfer characteristic of the control circuit. The gain of the system is such that the output operational amplifier saturates at an intermediate throttle setting such that the response for slow throttle is y=nx over the entire range of manifold pressure, while for fast throttle the response is y=nx for low manifold pressure and changes to y=mx+b for higher manifold pressure.

    5.
    发明专利
    未知

    公开(公告)号:DE3101831A1

    公开(公告)日:1981-12-24

    申请号:DE3101831

    申请日:1981-01-21

    Applicant: BRUNSWICK CORP

    Abstract: The invention contemplates electronically controlled fuel-injection for a multiple-cylinder two-cycle internal-combustion engine wherein each cylinder has its own independent crankcase region in which to receive and compress inlet air and fuel, prior to delivery of combustible mixture to the head or combustion end of the cylinder. Fuel is injected into each crankcase region during only a portion of the stroke involving induced intake of air therein, i.e., during only a portion of the rise of each piston in its approach to top-center position, and while pressure within the crankcase region is relatively uniform. The time-duration of actual injection is relatively short, thus enabling a plurality of different cylinder injections to be made concurrently, resulting in simplification of fuel-injection control circuitry.

    6.
    发明专利
    未知

    公开(公告)号:DE3027100A1

    公开(公告)日:1981-02-05

    申请号:DE3027100

    申请日:1980-07-17

    Applicant: BRUNSWICK CORP

    Abstract: An energy regulating system includes a D.C. battery electrically connected to a single phase winding of an A.C. generator through a full wave rectifying circuit. An SCR switch is directly connected in parallel to a Zener diode forming one bridge leg to selectively short circuit such Zener diode when the battery voltage exceeds a predetermined level. An integrated circuit includes a voltage comparator providing an independent, substantially constant reference signal which is compared to battery potential to provide a temperature independent gating output to the control SCR. The integrated circuit provides current limiting to maintain the gating signal within a predetermined magnitude.

    CATHODIC PROTECTION CONTROLLER
    9.
    发明专利

    公开(公告)号:GB2133592B

    公开(公告)日:1986-08-06

    申请号:GB8334057

    申请日:1983-12-21

    Applicant: BRUNSWICK CORP

    Abstract: A control system (17) for cathodically protecting an outboard drive unit (11) from corrosion includes an anode (12) and a reference electrode (13) mounted on the drive unit (11). Current supplied to the anode is controlled by a transistor (20), which in turn is controlled by an amplifier (25). The amplifier is biased to maintain a relatively constant potential on the drive unit (11) when operated in either fresh or salt water.

    10.
    发明专利
    未知

    公开(公告)号:DE3500020A1

    公开(公告)日:1985-09-26

    申请号:DE3500020

    申请日:1985-01-02

    Applicant: BRUNSWICK CORP

    Abstract: A control system for a feedback carburetor in which a controlled vacuum is applied to the carburetor fuel bowl to reduce the fuel flow rate and provide maximum fuel economy. Engine speed is monitored and reduced a predetermined amount during steady state cruising through use of an air control solenoid to apply the controlled vacuum. The controlled vacuum is removed during acceleration or when engine speed is outside the range of steady state cruise speed.

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