DE1775005A1 - Pneumatically operated throttle assembly - Google Patents

Description

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CLAYTON DEWANDRE COMPAIiT- LIMITED Titanic Works, Lincoln / ENGLAND

Pneumatically operated throttle assembly

The invention relates to pneumatically operated throttle control arrangements for motor vehicles, ie control arrangements in which a throttle valve actuated by the accelerator pedal controls the delivery of compressed air to a throttle cylinder or a drive or servomotor, which is effective with the engine throttling or | like. ' connected is.

JJE 1 arrangements of this type is supplied, the throttle valve with compressed air from a supplied by a compressor memory, wherein the compressor of the vehicle is motor driven occur when starting the engine, however, difficulties and delays when the full throttle operation is to be achieved, as the

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Throttling only progressively proportional to the buildup dee Air pressure in the memory can be opened. In accordance with the invention an improved control system is proposed which obviates the disadvantages of known systems which enables the full throttling process immediately after starting the vehicle engine with quick build-up of the storage pressure can be achieved

According to the invention, the improved arrangement consists of a direct compressed air connection between the compressor and the throttle valve and from this connection a branch line leads to the memory through a pressure protection valve, i.e. a valve that opens and only lets air through when the pressure difference at the valve exceeds a predetermined value, iiit this arrangement and with such a setting of the pressure protection valve, which this for example at 4. Ji2 kg / cm (60 psi ·) oii.net ,. only needs a small pipe volume between the compressor and. Throttle valve can be brought up to working pressure so that the full engine throttling can be obtained, whereby it is assumed that the throttle cylinder or the drive or the servomotor is designed so that it has an operating range between O - 4.2 kg / cm ² (0-60 psi).

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For example, embodiments of the invention are intended now explained in more detail with reference to the accompanying drawing in which the

Figures 1 and 2 compressed air arrangements with pressure relief valve baw. Safety or speed controller lines.

According to FIG. 1, the output is from a Komprecoor 11 through a line 12 to a pressure relief valve 13 and along a HUcksohlagventiles 14, preferably granular ' linked with the pressure relief valve, the line is then branched off, with a branch 12a to the memory 1b through Einff pressure protection valve 16 and the other branch 12b to Accelerator-regulated throttle valve 17 and from there via line 18 to the throttle cylinder 19, whereby the engine control 20 is operated mechanically. When starting, the compressor is separated from the accumulator until the full working pressure is reached at the throttle valve, while every time the compressor is shut down the Speioherdrucl: to supply the throttle valve remains available »In this case, the pressure relief valve is operated in such a way that air is allowed through in both clearings and works with a spring-loaded valve * element that only opens when a desired operating pressure is reached and the degree of spring loading

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• AD ORIGINAL

if desired, setting nist.

If the measure according to the invention is used in the compressed air system shown in FIG. Safety regulator installed, so the ideing line is branched off from the compressor 21 as before, whereby a branch 22a leads through the pressure protection valve 26 and then through a check valve 24 to the accumulator 25> while the other branch 22b leads directly to the throttle valve 27 and then via the line 28 to the throttle valve 29 leads "J3 ^ü eäts- · lent regulates a safety controller or speed controller in a associated with the memory Leitung.31 da *. Built-in pressure relief valve ( not shown) in the compressor, while another line is the memory, with the delivery branch 22b through a Doppelrückpchlagereatil

»That connects the memory of the / valve-connected. ', * y ■■■' ■ - ■■ '■ ·

Branch 22b during startup, and the same disconnects · <..

■ ■ φ ** ^ ' and in a similar way to the compressor from the storage

gen the throttle valve connection 32 disconnects when the compressor stops working su.

Claims

Claims (1)

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