Claims:We claim:
1. An intake system (100) for an engine of a vehicle, said intake system (100) comprising:
an intake conduit (118),
a throttle valve (120) located in said intake conduit (118),
a bypass path (112) connecting an upstream of said intake conduit (118) to a downstream of said intake conduit (118), and
a purge path (108) from a canister (106) to the downstream of said intake conduit (118), characterized in that,
an intake apparatus (110) enclosing said bypass path (112) and said purge path (108), and fluidly coupling said bypass path (112) and said purge path (108) to each other to provide a common outlet (1106).
2. The intake system (100) as claimed in claim 1, wherein a valve (114) is located at said common outlet (1106).
3. The intake system (100) as claimed in claim 2, wherein said valve (114) is also operated to regulate flow of fluids through a first inlet (1102) of said bypass path (112) and through a second inlet (1104) of said purge path (108)
4. The intake system (100) as claimed in claim 2, wherein said valve (114) is selectively operated to control flow of fluids from said bypass path (112) and said purge path (108), to an intake manifold of said engine.
5. The intake system (100) as claimed in claim 2, wherein said valve (114) is operated by any one of a manual means and at least one actuator (116) selected from a group comprising a solenoid actuator, a mechanical actuator, a pneumatic actuator, a hydraulic actuator, a piezo electric actuator, an electric actuator and the like.
6. An intake apparatus (110) for an engine of a vehicle, said intake apparatus (110) comprising:
a bypass path (112) connecting an upstream of an intake conduit (118) to a downstream of said intake conduit (118), and
a purge path (108) from a canister (106) to the downstream of said intake conduit (118),
said bypass path (112) and said purge path (108) are fluidly coupled to each other to provide a common outlet (1106).
7. The intake apparatus (110) as claimed in claim 6, wherein a valve (114) is located at said common outlet (1106).
8. The intake apparatus (110) as claimed in claim 7, wherein said valve (114) is operated to regulate flow of fluids through a first inlet (1102) of said bypass path (112) and through a second inlet (1104) of said purge path (108).
9. The intake apparatus (110) as claimed in claim 7, wherein said valve (114) is selectively operated to control flow of fluids from said bypass path (112) and said purge path (108), to an intake manifold of said engine.
10. The intake apparatus (110) as claimed in claim 7, wherein said valve (114) is operated by any one of a manual means and at least one actuator (116) selected from a group comprising a solenoid actuator, a mechanical actuator, a pneumatic actuator, a hydraulic actuator, a piezo electric actuator, an electric actuator and the like.
, Description:Field of the invention:
[0001] The present invention relates to a throttle body and particular relates to an intake apparatus for an engine of a vehicle.

Background of the invention:
[0002] According to a patent literature US2015159597, an active purge pump system module for evaporative emission control system is disclosed. The active purge pump system module is provided for an evaporative emission control (EVAP) system for a vehicle. The EVAP system includes a fuel tank, a vapor collection canister in communication with the fuel tank, an air intake, and a purge valve connected between the canister and the air intake. The active purge pump system module includes a pump in fluid communication with the canister to move air independently of operation of the engine. A bypass valve assembly communicates with an upstream side and a downstream side of the pump to bypass the pump. In a closed position of the bypass valve assembly, the pump, when activated, moves purge vapor from the canister, through the purge valve, and to the engine to be consumed during combustion, and when the bypass valve assembly is opened and the pump is deactivated, vehicle refueling is permitted.

Brief description of the accompanying drawings:
[0003] An embodiment of the disclosure is described with reference to the following accompanying drawing,
[0004] Fig. 1 illustrates an air intake system of a vehicle, according to an embodiment of the present invention;
[0005] Fig. 2 illustrates an air intake apparatus with a valve in first position, according to an embodiment of the present invention;
[0006] Fig. 3 illustrates the valve in second position, according to an embodiment of the present invention;
[0007] Fig. 4 illustrates the valve in third position, according to an embodiment of the present invention;
[0008] Fig. 5 illustrates the valve in fourth position, according to an embodiment of the present invention, and
[0009] Fig. 6 illustrates the air intake system with a different valve, according to an embodiment of the present invention.

Detailed description of the embodiments:
[0010] Fig. 1 illustrates an intake system of a vehicle, according to an embodiment of the present invention. The intake system 100 of the vehicle comprises an intake conduit 118. A throttle valve 120 is located or fit inside the intake conduit 118. A bypass path 112 is provided which connects an upstream of the intake conduit 118 to a downstream of the intake conduit 118. The intake system 100 also comprises a fuel tank 102, and a canister 106 connected to the fuel tank 102 through a tube 104. The canister 106 comprises activated charcoal to trap fuel vapors collected from the fuel tank 102. The canister 106 is further connected to an intake manifold of the engine (not shown) through a purge path 108. The purge path 108 is connected to the downstream of the throttle valve 120. The intake system 100 works based on either a carburetor or an electronic fuel injection.
[0011] The intake system 100 comprises an intake apparatus 110. The intake apparatus 110 encloses the bypass path 112 and the purge path 108. The bypass path 112 and the purge path 108 are fluidly coupled to each other to provide a common outlet 1106 (shown in Fig. 2). A valve 114 is located or fit in the common outlet 1106 for regulating the flow of fluid. The valve 114 is selectively operated to control flow of fluids from the bypass path 112 and the purge path 108, to an intake manifold (not shown) of the engine. For the bypass path 112, the fluid is air, whereas for the purge path 108, the fluid is combination of fuel vapor and air or only air when the canister 106 is exhausted with fuel vapor. The arrows in the tube 104, purge path 108, bypass path 112, intake conduit 118 represents flow direction of the fluid.
[0012] Fig. 2 illustrates an air intake apparatus with a valve in first position, according to an embodiment of the present invention. The bypass path 112 and the purge path 108 are provided inside the intake apparatus 110. The intake apparatus 110 comprises a first inlet 1102 for the bypass path 112 and a second inlet 1104 for the purge path 108, with the common outlet 1106. The common outlet 1106 opens to an intake manifold of the intake system 100. The valve 114 is also operated to regulate flow of fluids through the first inlet 1102 of said bypass path 112 and through a second inlet 1104 of said purge path 108.
[0013] The intake apparatus 110 also comprises an actuator 116 to control or operate the valve 114. The valve 114 comprises a spool with two heads, namely a first head 1142 and a second head 1144. The valve 114 is shown for simplicity of understanding and other types of valves 114 are equally applicable and must not be understood in a limiting sense. Further, the different shapes and sizes of the valve 114 is possible to be used.
[0014] In accordance to an embodiment of the present invention, the intake apparatus 110 is provided with a circular body. The circular body comprises the bypass path 112, the purge path 108 and the common outlet 1106. The circular body is provided with openings to fluidly connect with the canister 106, the intake conduit 118 and the intake manifold. Further, the circular body comprises an internal rotating member. The internal rotating member functions as a valve 114 and is rotated by the actuator 116 which makes or breaks the flow of fluids. When rotated to a first position, the bypass path 112 is open to the common outlet 1106. When rotated to a second position, the purge path 108 is open to the common outlet 1106. When rotated to a third position, both the bypass path 112 and the purge path 108 are open to the common outlet 1106. When rotated to a fourth position, both the bypass path 12 and the purge path are closed.
[0015] In the Fig. 2, the valve 114 is shown closing the common outlet 1106 with the second head 1144. The second head 1144 has also closed the second inlet 1104 for the purge path 108. The flow of fluid through the bypass path 112 and the purge path 108 are blocked or closed.
[0016] The actuator 116 is operated either by manual means or electronically operating at least one actuator 116 through a controller (not shown). The valve 114 is operated by at least one actuator 116 selected from a group comprising a solenoid actuator, a mechanical actuator, a pneumatic actuator, a hydraulic actuator, a piezo electric actuator, an electric actuator and the like. The valve 114 is also possible to be operated by manual means by using his/her hand.
[0017] Fig. 3 illustrates the valve in second position, according to an embodiment of the present invention. Based on the operating condition of the engine or demand from the driver, the actuator 116 is operated to move the valve 114 to a second position. In this position, the second head 1144 of the valve 114 uncovers the common outlet 1106 thereby opening the bypass path 112. This position corresponds to idling where the engine is supplied with minimum air required to keep the engine ON or running. The purge path 108 is still blocked by the second head 1144, whereas the first inlet 1102 is partially blocked by the first head 1142.
[0018] The valve 114 is operated to regulate flow of fluids through inlets of the bypass path 112 and the purge path 108, i.e. the first inlet 1102 and the second inlet 1104.
[0019] Fig. 4 illustrates the valve in third position, according to an embodiment of the present invention. The valve 114 is moved to a position where the first inlet 1102 is closing and the second inlet 1104 is started to open. In this position, the fuel vapors stored in the canister 106 starts flowing due to suction or due to pumping from other sources, into the intake manifold.
[0020] Fig. 5 illustrates the valve in fourth position, according to an embodiment of the present invention. The valve 114 is now moved by the actuator 116 to such a position, where the first inlet 1102 of the bypass path 112 is blocked by the first head 1142. The second head 1144 has completely uncovered the second inlet 1104 for the purge path 108. Now, only the fuel vapors from the canisters flows into the intake manifold.
[0021] Fig. 6 illustrates the air intake system with a different valve, according to an embodiment of the present invention. The valve 114 of the intake apparatus 110 is simplified with only one first head 1142. The position of the actuator 116 is moved for simplicity of illustration. The valve 114 is operated by the actuator 116 based on the command from the controller or manually. The valve 114 is moved back and forth, based on the need/requirement to either open only bypass path 112 or purge path 108, or close both bypass path 112 and purge path 108, or partially open both bypass path 112 and the purge path 108.
[0022] In accordance to an embodiment of the present invention, the intake apparatus 110 for the engine of the vehicle is provided. The intake apparatus 110 comprises the bypass path 112 and the purge path 108. The bypass path 112 connects an upstream of the intake conduit 118 to the downstream of the intake conduit 118, and the purge path 108 connects a canister 106 to the downstream of the intake conduit 118. Further, inside the intake apparatus 110, the bypass path 112 and the purge path 108 are fluidly coupled to each other to provide a common outlet 1106.
[0023] In another embodiment, the intake apparatus 110 comprises a housing or manifold comprising channels for bypass path 112 and the purge path 108. The already existing bypass path 112 and the purge path 108 of the vehicle, are connected to these channels of the intake apparatus 110.
[0024] A valve 114 is located at the common outlet 1106 for regulating the outflow of the fluid. The valve 114 is also operated to regulate flow of fluids through the first inlet 1102 of the bypass path 112 and through a second inlet 1104 of the purge path 108. The valve 114 is selectively operated to control flow of fluids from the bypass path 112 and the purge path 108, to an intake manifold of the engine. The valve 114 is operated by any one of a manual means and at least one actuator 116 selected from a group comprising a solenoid actuator, mechanical actuator, pneumatic actuator, hydraulic actuator, piezo-electric actuator and electric actuator and the like. For example: a stepper motor based actuator 116 is used to move the valve 114. The valve 114 is move linearly and forward and backward direction. The actuator 116 is either integrated with a throttle body comprising the intake conduit 118 and the throttle valve 120, or a separate holder is provided as a stand-alone device to hold the actuator 116.
[0025] In accordance to an embodiment of the present invention, a throttle body is provided with an integrated intake apparatus 110. The throttle body comprises the intake conduit 118, throttle valve 120, an optional fuel injector (not shown).
[0026] In accordance to an embodiment of the present invention, the intake apparatus 110 provides the idle-airflow control and EVAP purging with a single actuator 116. The intake apparatus 110 enables simplification of the EVAP system and reduces cost. The cost reduction is due to the elimination of purge-valve (CPV) and purge-valve fixations and electrical connector. The actuator 116 performs the dual function of idle-airflow control and EVAP purging. The intake apparatus 110 is adaptable to various geometric profiles with different airflow cross-sections.
[0027] It should be understood that embodiments explained in the description above are only illustrative and do not limit the scope of this invention. Many such embodiments and other modifications and changes in the embodiment explained in the description are envisaged. The scope of the invention is only limited by the scope of the claims.