UNIT

CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY

The present application claims priority from Indian Patent Application No. 202121038985 filed on 27 ^th August 2021, the entirety of which is incorporated herein by a reference.

TECHNICAL FIELD

The present subject matter described herein, in general, relates to a remote throttle control in vehicles. More particularly, the present subject matter relates to an remote throttle control when PTO (power take-off) unit is engaged and position of throttle is maintained irrespective of the position of the acceleration paddle, the RPM is controlled at a constant rate in a mobile fuel dispenser tanker.

BACKGROUND

The concept of mobile fuel dispenser tanker/ pump has evolved in the recent days. The mobile fuel dispenser tanker can deliver fuel directly at client location. These mobile fuel dispenser tankers include fuel trucks, fuel tankers, mobile fuel storage units etc. Such mobile fuel dispenser tanker makes it easy to transport the fuel from one place to another over a larger distance.

In such mobile fuel dispenser trucks, the fuel delivery is enabled using a vane pump, wherein the vane pump is configured to pump the fuel from a fuel tank of the mobile fuel pump to the fuel dispenser. This vane pump is driven by power take-off (PTO shaft). PTO system is connected to vehicle engine. Based on the paddle position of vehicle accelerator or throttle the speed of engine output shaft will vary, which varies the PTO speed, which may further vary the operation of vane pump. Further this variation in vane pump will result in continuously changing the fuel flow rate. This change in flow rate of fuel may crate undesirable fuel delivery that continuously which is undesirable.

Thus, there is long standing need for mechanism which will keep the RPM of PTO unit constant even when the throttle is engaged. SUMMARY

This summary is provided to introduce the concepts related to a system for remote throttle control in a mobile fuel tank and the concepts are further described in the detail description. This summary is not intended to identify essential features of the claimed subject matter nor is it intended to use in determining or limiting the scope of claimed subject matter.

In the present subject matter, a system for controlling RPM of a PTO unit (remote throttle control unit) in a mobile fuel bowser is disclosed. Further, the system may comprise a mobile fuel bowser engine, a throttle unit, wherein the throttle unit may be configured to control flow of fuel to the mobile fuel bowser engine. Further, the system may comprise a PTO unit, wherein the PTO unit may be powered by the output shaft of the mobile fuel bowser engine. Further, the PTO unit may be further configured to power a vane pump, wherein the vane pump may be configured to pump fuel from a storage tank to a fuel dispenser. Further, the system may comprise a monitoring unit, wherein the monitoring unit may be configured to receive signal from a PTO engagement sensor and a throttle position sensor detector. Further, based on the signal received from the PTO engagement sensor, the engagement of the PTO unit may be detected. Further, since the RPM of the output shaft is controlled, the RPM of the PTO unit may be controlled at a constant speed. Further, the system may comprise a control unit, wherein the control unit may be configured to detect change in position of the throttle unit. Further, the control unit may control the flow of fuel to the mobile fuel bowser engine to regulate RPM of the output shaft of the mobile fuel bowser engine.

In a present subject matter, a method of controlling RPM of a PTO unit (remote throttle control unit) in a mobile fuel bowser is disclosed. Further, the method may comprise generating a sensor signal from a PTO engagement sensor and a Throttle Position Sensor detector, when a PTO unit may be engaged, or when a Throttle unit may be engaged. Further, the method comprises detecting the engagement of the PTO unit based on the signal received from the PTO engagement sensor. Further, the method may comprise alerting means, wherein the alerting means may be configured to receive the Throttle position sensor detection signal generated due to engagement of the throttle unit. Further, the method comprises controlling a fuel flow to the engine of the bowser to control output speed of the output shaft, which controls the RPM of the PTO unit, and thereby controlling the flow rate of fuel from a fuel dispense. BRIEF DESCRIPTION OF DRAWINGS

The detailed description is described with reference to the accompanying figures. In the Figures, the left-most digit(s) of a reference number identifies the Figure in which the reference number first appears. The same numbers are used throughout the drawings to refer like features and components.

Figure 1 illustrates system 100 of controlling RPM of a PTO unit (remote throttle control unit) in accordance with an embodiment of a present subject matter.

Figure 2 illustrates a method 200 for controlling RPM of a PTO unit (remote throttle control unit) in accordance with an embodiment of a present subject matter.

DETAILED DESCRIPTION

Reference throughout the specification to “various embodiments,” “some embodiments,” “one embodiment,” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases “in various embodiments,” “in some embodiments,” “in one embodiment,” or “in an embodiment” in places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

The present disclosure relates to a system and method for controlling RPM of a power take off (PTO) unit. Now refer figure 1, which illustrates a system (100) for controlling RPM of a PTO unit (remote throttle control unit) in accordance with an embodiment of a present subject matter. Further, the system may comprise a throttle unit (101), a mobile fuel bowser engine (103), a transmission unit (105), a control unit (107), a PTO unit (109), a monitoring unit (111), a vane pump (113), and a Fuel Dispenser (115). Further, the throttle unit (101) may be configured to control flow of fuel to the mobile fuel bowser engine (103) for controlling RPM of an output shaft of the mobile fuel bowser engine (103). Further, the PTO unit (109) may be powered by the output shaft of the mobile fuel bowser engine (103). Further, the PTO unit (109) may further be configured to power a vane pump (113), wherein the vane pump (113) may configured to pump fuel from a storage tank (not show in the figure) to a fuel dispenser (115) to deliver the fuel. Further, the monitoring unit (111) may be configured to receive signal sensors deployed in the system for detecting engagement of PTO unit (109) or the throttle unit (101). Further, on the basis based on the signal received from sensor, the monitoring unit (111) alerts the control unit (107) to control the RPM of the output shaft of mobile fuel bowser engine (103), which may further enabled the PTO unit (109) to be controlled at a constant speed. Further the constant speed may enable a constant rate of flow of fuel from the fuel dispenser (115). Further, the monitoring unit (111) may be configured to detect change in throttle position of the throttle unit (101). Further, the monitoring unit (111) may alert the control unit (107) to control the flow of fuel to the mobile fuel bowser engine (103) through the throttle unit (101), to regulate RPM of the output shaft of the mobile fuel bowser engine (103). Further, regulating RPM of the output shaft of the mobile fuel bowser engine (103) may further regulate the RPM of the PTO unit (109) at a constant RPM. Further, the constant RPM of the PTO unit (109) may enable uniform speed of the vane pump (113), thereafter controlling the fuel flow rate from the fuel dispenser (115).

In one embodiment, the monitoring unit (111) may comprise a PTO engagement sensor, wherein the PTO engagement sensor may be configured to detect engagement of the PTO unit (109). Further, the monitoring unit may also comprise a throttle position sensor detector, wherein the throttle position sensor detector may detect engagement of the throttle unit (101) during fuel delivery. Furthermore, the monitoring unit (111) may comprise an alerting means, wherein the alerting means may be configured to generate an alert on the basis of sensor signals received from the PTO engagement sensor and the throttle position sensor detector. Furthermore, the alerting means may also be configured to generate alert when the speed of the PTO unit (109) may be lower than required operational speed.

In one embodiment, the fuel dispenser (115) may comprise a fuel flow rate sensor, wherein the flow rate sensor may be configured to generate a fuel flow rate signal indicating flow rate of the fuel from the fuel dispenser (115). Further, the flow rate sensor may be configured to transmit sensor signals related to flow rate of fuel to the monitoring unit (111).

In one embodiment, the PTO unit (109) may be connected to the output shaft of the mobile fuel bowser engine (103). Further, the PTO unit (109) may be enabled with a engaging or a disengaging arrangement, wherein the engaging or a disengaging arrangement may be accessed by a driver or an operator, to engage or disengage the PTO unit (109).

In an alternative embodiment, the system comprises a vertical fuel sensor, wherein the vertical fuel sensor may be embedded in a storage tank. Further, a housing may be provisioned onto the storage tank, wherein housing may be configured to encapsulate the vertical fuel sensor. In one embodiment, the system may comprise an auxiliary power supply to maintain the RPM of PTO unit (109). Further the system may comprise a tachometer to measure RPM of the output shaft of the mobile fuel bowser engine (103).

In one embodiment, now refer to figure 2, a method 200 for controlling RPM of a PTO unit (remote throttle control unit) in accordance with an embodiment of a present subject matter.

At step (201), a sensor signal may be generated from a PTO engagement sensor and a throttle position sensor detector in the monitoring unit (111), wherein the PTO unit (109) may be activated manually by the user for initiating the fuel delivery process from the fuel tank to the fuel dispenser.

At step (203), based on the signal received from the PTO engagement sensor; engagement status of the PTO unit (109) is detected. Further vane pump (113) may start pumping fuel out of fuel dispenser (115).

At step (205), an alert is generated by the alerting means when the throttle unit (101) is engaged, wherein the alert is generated by alerting means in the monitoring unit (111).

At step (205), controlling the fuel flow to the engine of the bowser to control output speed of the engine output shaft, which controls the RPM of the PTO unit (109), and thereby controlling the flow rate of fuel from a fuel dispenser (115) even when the throttle unit (101) is engaged;

Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.

The foregoing description shall be interpreted as illustrative and not in any limiting sense. A person of ordinary skill in the art would understand that certain modifications could come within the scope of this disclosure.

The embodiments, examples and alternatives of the preceding paragraphs or the description and drawings, including any of their various aspects or respective individual features, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible.