US20210053437A1 - Electronic venting in a saddle fuel tank - Google Patents
Electronic venting in a saddle fuel tank Download PDFInfo
- Publication number
- US20210053437A1 US20210053437A1 US17/092,530 US202017092530A US2021053437A1 US 20210053437 A1 US20210053437 A1 US 20210053437A1 US 202017092530 A US202017092530 A US 202017092530A US 2021053437 A1 US2021053437 A1 US 2021053437A1
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- Prior art keywords
- fuel tank
- vent
- lobe
- fuel
- saddle
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- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
- F02M37/0094—Saddle tanks; Tanks having partition walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0651—One-way valve the fluid passing through the solenoid coil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52408—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve
- F16K31/52416—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a lift valve comprising a multiple-way lift valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0319—Fuel tanks with electronic systems, e.g. for controlling fuelling or venting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
- B60K2015/03217—Fuel level sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
- B60K2015/03217—Fuel level sensors
- B60K2015/03223—Fuel level sensors comprising at least two level fuel sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
- B60K2015/03276—Valves with membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
- B60K2015/03302—Electromagnetic valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03523—Arrangements of the venting tube
- B60K2015/03533—Arrangements of the venting tube the venting tube being movable with the fuel level
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03561—Venting means working at specific times
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03561—Venting means working at specific times
- B60K2015/03566—Venting means working at specific times comprising means for stopping the venting of fuel vapor, e.g. during refueling or engine stop
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2530/00—Input parameters relating to vehicle conditions or values, not covered by groups B60W2510/00 or B60W2520/00
- B60W2530/209—Fuel quantity remaining in tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M2025/0863—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir with means dealing with condensed fuel or water, e.g. having a liquid trap
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7761—Electrically actuated valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86187—Plural tanks or compartments connected for serial flow
- Y10T137/86212—Plural compartments formed by baffles
Definitions
- the present disclosure relates generally to fuel tanks on passenger vehicles and more particularly to a fuel tank that allows proper venting in a saddle fuel tank.
- a fuel tank having a saddle geometry can present challenges for proper venting. Saddle fuel tanks are popular among all-wheel-drive powertrain configurations. A saddle tank has two independent lobes often filled with fuel to different heights in different scenarios. In some examples, the geometry of the saddle tank can cause the fuel tank to incorrectly assume a full fuel condition based on fuel level interaction with existing shut-off valve configurations. While current offerings are satisfactory it would be desirable to provide a system on a saddle fuel tank that vents independently of the volume in either lobe while still accurately determining the total fuel volume in the entire fuel tank.
- a fuel tank system controlled by a control module and constructed in accordance to one example of the present disclosure includes a saddle fuel tank, and a venting assembly.
- the saddle fuel tank has a first lobe and a second lobe extending on opposite ends of a recessed central portion.
- the venting assembly comprises a first vent line, a second vent line and a rotary actuator.
- the first vent line has a first vent port located in the first lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion.
- the second vent line has a second vent port located in the second lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion.
- the rotary actuator is configured to rotate a cam.
- the cam selectively translates a first vent configured to open and close the first vent line and a second valve configured to open and close the second vent line.
- the first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves.
- the control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- the cam is configured to close one of the first and second valves.
- the cam can be configured to concurrently close the first and second valves.
- the control module can be positioned intermediate the first and second vent ports on the saddle tank.
- the fuel tank system can further include a liquid trap.
- the first and second vent lines can be routed between the first and second vent ports and the liquid trap.
- the fuel tank system can further include a fuel level sensor that communicates to the control module a signal corresponding to the full fuel condition.
- the fuel level sensor can comprise a first fuel level sensor disposed in the first lobe and a second fuel level sensor disposed in the second lobe.
- the first and second valves can be poppet valves.
- a fuel tank system controlled by a control module and constructed in accordance to another example of the present disclosure includes a saddle fuel tank, and a venting assembly.
- the saddle fuel tank has a first lobe, a second lobe and a recessed central portion positioned between the first and second lobes.
- the venting assembly comprises a first vent line, a second vent line and a rotary actuator.
- the first vent line has a first vent port located in the first lobe of the saddle fuel tank above the recessed central portion.
- the second vent line has a second vent port located in the second lobe of the saddle fuel tank above the recessed central portion.
- the rotary actuator is configured to rotate a cam.
- the cam selectively moves a first valve that opens and closes the first vent line and a second valve that opens and closes the second vent line.
- the first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves.
- the control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- a fuel tank system controlled by a control module and constructed in accordance to yet another example of the present disclosure includes a saddle fuel tank, and a venting assembly.
- the saddle fuel tank has a first lobe, a second lobe and a recessed central portion positioned between the first and second lobes.
- the venting assembly comprises a first vent line, a second vent line and a rotary actuator.
- the first vent line has a first vent port located in the first lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion.
- the second vent line has a second vent port located in the second lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion.
- the rotary actuator rotates a cam.
- the cam selectively moves a first valve that opens and closes the first vent line and a second valve that opens and closes the second vent line.
- the first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves.
- the control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- FIG. 1 is a schematic illustration of a saddle fuel tank incorporating an electronic venting system and constructed in accordance to one example of the present disclosure
- FIG. 2 is a schematic illustration of a saddle fuel tank constructed in accordance to one example of prior art
- FIG. 3 is a schematic illustration of a saddle fuel tank constructed in accordance to another example of prior art
- FIG. 4 is a schematic illustration of the fuel tank of FIG. 1 ;
- FIG. 5A is a schematic illustration of a cam driven tank venting assembly constructed in accordance to additional features of the present disclosure and shown with the two vents in an open position;
- FIG. 5B is a schematic illustration of the cam driven tank venting assembly of FIG. 5A and shown with the two vents in a closed position.
- Fuel tank 10 is a saddle fuel tank having a first lobe 12 and a second lobe 14 .
- the first lobe 12 is configured as a fuel inlet side.
- the second lobe 14 includes a fuel limit vent valve (FLVV) 20 having a shut off point 22 .
- the FLVV 20 controls the shut off point of fuel during refueling based on a relationship between the level of fuel and the shut off point 22 .
- the second lobe 14 is where the fuel tank 10 controls the shut-off height of the fuel during refueling.
- the first lobe 12 and the second lobe 14 can have unequal fuel heights.
- a fuel tank 10 A includes a venturi or slave pump 30 .
- the slave pump 30 can be incorporated in the first lobe 12 A to pump fuel from the first lobe 12 A to the second lobe 14 A.
- the second lobe 14 A includes a fuel pump 34 .
- the slave pump 30 will pump fuel from the first lobe 12 A to the second lobe 14 A to level out the first and second lobes 12 A and 14 A.
- the slave pump 30 will operate to keep a similar level of fuel in both of the first and second lobes 12 A, 14 A.
- the slave pump 30 may pump fuel from the second lobe 14 A to the first lobe 12 A.
- the fuel level will then be above the FLVV shut off point 22 ( FIG. 2 ).
- the shut off point 22 is submerged under fuel.
- the FLVV 20 may still remain shut off even if the tank is less than full. In such a scenario the FLVV 20 has not reopened and therefore no vent pathway is available to allow refueling.
- the fuel tank system 110 includes an electronic venting system 112 configured on a saddle fuel tank 114 .
- the saddle fuel tank 114 includes a first lobe 116 and a second lobe 118 .
- the first lobe 116 and second lobe 118 can generally define bulbous portions extending on opposite sides of a recessed central portion 119 .
- the electronic venting system 112 can include a solenoid assembly 120 including a first solenoid 122 and a second solenoid 124 .
- a control module 130 can control the first and second solenoids 122 and 124 .
- the first solenoid 122 is connected to a first vent line 132 .
- the second solenoid 124 is connected to a second vent line 134 .
- the first vent line 132 can terminate at a first vent port 136 .
- the second vent line 134 can terminate at a second vent port 138 .
- the vent ports 136 and 138 are controlled by the first and second solenoids 122 and 124 .
- the vent ports 136 and 138 can be positioned near a top portion 139 of the saddle fuel tank 114 .
- the top portion 139 can be located generally within the respective first and second lobes 116 and 118 above the recessed central portion 119 .
- the first and second vent ports 136 and 138 are positioned in the respective first and second vent lobes 116 and 118 above the first and second solenoids 122 and 124 of the saddle fuel tank 114 .
- a liquid trap 140 can include a pump 142 such as a venturi pump or jet that drains liquid by way of a vacuum out of the liquid trap 140 when the fuel pump is on.
- a mechanical liquid vapor discriminating (LVD) valve 148 can be provided at the liquid trap 140 .
- the LVD valve 148 can include a membrane filter positioned in the internal housing cavity between an inlet and an outlet.
- the membrane filter can be configured to prevent the passage of liquid through the membrane and allow the passage of air and/or fuel vapor through the membrane.
- the membrane may be a liquid discriminating membrane. In once configuration, the membrane can be configured so that it does not change the hydrocarbon concentration of the air and/or fuel vapor that passes through the membrane.
- the pump 142 in the liquid trap 140 can be configured as a solenoid pump for clearing the liquid from the liquid trap 140 .
- a first fuel level sensor 150 can be disposed in the first lobe 116 .
- a second level sensor 152 can be disposed in the second lobe 118 .
- the control module 130 can send a signal to one or both of the first and second solenoids 122 and 124 to close the first and second vent lines 132 and 134 at the respective vent ports 136 and 138 . While level sensors 150 and 152 are illustrated, one in each lobe 116 and 118 , it will be appreciated that fuel level may be determined and/or communicated to the control module 130 in different ways within the scope of the present disclosure.
- the solenoids 122 and 124 can close the first and vent lines 132 and 134 concurrently or individually. Because the vent ports 136 and 138 are at an elevated location on the fuel tank 114 , they are above the fuel level thus avoiding the limitations described above with respect to the fuel tank 10 ( FIGS. 1 and 2 ). In other words, the level of the liquid in the fuel tank 114 will not interfere with the vent ports 136 and 138 . Further, as shown in FIG. 4 , the fuel may fill the first lobe 116 and subsequently spill over into the second lobe 118 . The venting will be open at the vent ports 136 and 138 allowing fuel filling to continue until reaching a predetermined amount, such as identified by the level sensors 150 and 152 . Thus, the configuration of the saddle tank will not have an adverse effect of inadequate venting and possible fuel fill issues.
- the electronic venting system 112 provided by the fuel tank system 110 can accurately identify a 100% full fuel condition independent of the fuel height in either of the first and second lobes 116 and 118 .
- the fuel tank system 110 can repeatably attain a 100% fill condition as the vent ports 136 and 138 can only be closed based on the status of the first and second solenoids 122 and 124 .
- the fuel tank system 210 can be constructed similarly to the fuel tank system 110 described above except instead of the control module 130 controlling first and second solenoids 122 and 124 , the control module 130 communicates with a cam driven tank venting assembly 220 .
- the cam driven tank venting assembly 220 includes one rotary actuator 230 and a cam 232 to selectively open valves 240 and 242 .
- the valves 240 and 242 can be poppet valves that are configured to open and close respective vent lines 250 and 252 .
- the vent lines 250 and 252 can be configured similarly to the first and second vent lines 132 and 134 described above and lead to respective vent ports.
- the cam 232 can be rotated to a prescribed position where the desired valves 240 and 242 are open or closed.
- the cam 232 is configured to close both valves 240 and 242 concurrently in FIG. 5B corresponding to a predetermined status being attained by the level sensors 150 and 152 .
- the cam 232 can also be configured to close one of the valves 240 and 242 depending upon which lobe requires venting to be closed.
- the venting configuration provided by the fuel tank system 210 can accurately identify a 100% full fuel condition independent of the fuel height in either of the first and second lobes ( 116 , 118 ).
- the fuel tank system 210 can repeatably attain a 100% fill condition as the vent ports ( 136 , 138 ) can only be closed based on the status of the valves 240 and 242 .
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 15/782,302 filed Oct. 12, 2017, which is a continuation of International Application No. PCT/US2016/027226 filed Apr. 13, 2016, which claims the benefit of U.S. Patent Application No. 62/146,660 filed on Apr. 13, 2015; and U.S. Patent Application No. 62/161,339 filed on May 14, 2015. The disclosures of the above applications are incorporated herein by reference.
- The present disclosure relates generally to fuel tanks on passenger vehicles and more particularly to a fuel tank that allows proper venting in a saddle fuel tank.
- Proper venting and handling of fuel and fuel vapor is required for fuel tanks. More particularly, fuel tanks must be properly vented for passenger motor vehicles. Furthermore, fuel tanks must properly account for containment of liquid fuel. A fuel tank having a saddle geometry can present challenges for proper venting. Saddle fuel tanks are popular among all-wheel-drive powertrain configurations. A saddle tank has two independent lobes often filled with fuel to different heights in different scenarios. In some examples, the geometry of the saddle tank can cause the fuel tank to incorrectly assume a full fuel condition based on fuel level interaction with existing shut-off valve configurations. While current offerings are satisfactory it would be desirable to provide a system on a saddle fuel tank that vents independently of the volume in either lobe while still accurately determining the total fuel volume in the entire fuel tank.
- The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.
- A fuel tank system controlled by a control module and constructed in accordance to one example of the present disclosure includes a saddle fuel tank, and a venting assembly. The saddle fuel tank has a first lobe and a second lobe extending on opposite ends of a recessed central portion. The venting assembly comprises a first vent line, a second vent line and a rotary actuator. The first vent line has a first vent port located in the first lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion. The second vent line has a second vent port located in the second lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion. The rotary actuator is configured to rotate a cam. The cam selectively translates a first vent configured to open and close the first vent line and a second valve configured to open and close the second vent line. The first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves. The control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- According to additional features, the cam is configured to close one of the first and second valves. The cam can be configured to concurrently close the first and second valves. The control module can be positioned intermediate the first and second vent ports on the saddle tank. The fuel tank system can further include a liquid trap. The first and second vent lines can be routed between the first and second vent ports and the liquid trap. The fuel tank system can further include a fuel level sensor that communicates to the control module a signal corresponding to the full fuel condition. The fuel level sensor can comprise a first fuel level sensor disposed in the first lobe and a second fuel level sensor disposed in the second lobe. The first and second valves can be poppet valves.
- A fuel tank system controlled by a control module and constructed in accordance to another example of the present disclosure includes a saddle fuel tank, and a venting assembly. The saddle fuel tank has a first lobe, a second lobe and a recessed central portion positioned between the first and second lobes. The venting assembly comprises a first vent line, a second vent line and a rotary actuator. The first vent line has a first vent port located in the first lobe of the saddle fuel tank above the recessed central portion. The second vent line has a second vent port located in the second lobe of the saddle fuel tank above the recessed central portion. The rotary actuator is configured to rotate a cam. The cam selectively moves a first valve that opens and closes the first vent line and a second valve that opens and closes the second vent line. The first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves. The control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- A fuel tank system controlled by a control module and constructed in accordance to yet another example of the present disclosure includes a saddle fuel tank, and a venting assembly. The saddle fuel tank has a first lobe, a second lobe and a recessed central portion positioned between the first and second lobes. The venting assembly comprises a first vent line, a second vent line and a rotary actuator. The first vent line has a first vent port located in the first lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion. The second vent line has a second vent port located in the second lobe of the saddle fuel tank near a top portion of the saddle fuel tank above the recessed central portion. The rotary actuator rotates a cam. The cam selectively moves a first valve that opens and closes the first vent line and a second valve that opens and closes the second vent line. The first and second vent ports are positioned in the respective first and second vent lobes above the first and second valves. The control module sends a signal to the rotary actuator to rotate the cam and therefore close the first and second vent lines with the respective first and second valves upon reaching a full fuel condition.
- The present disclosure will become more fully understood from the detailed description and the accompanying drawings, wherein:
-
FIG. 1 is a schematic illustration of a saddle fuel tank incorporating an electronic venting system and constructed in accordance to one example of the present disclosure; -
FIG. 2 is a schematic illustration of a saddle fuel tank constructed in accordance to one example of prior art; -
FIG. 3 is a schematic illustration of a saddle fuel tank constructed in accordance to another example of prior art; -
FIG. 4 is a schematic illustration of the fuel tank ofFIG. 1 ; -
FIG. 5A is a schematic illustration of a cam driven tank venting assembly constructed in accordance to additional features of the present disclosure and shown with the two vents in an open position; and -
FIG. 5B is a schematic illustration of the cam driven tank venting assembly ofFIG. 5A and shown with the two vents in a closed position. - With initial reference now to
FIG. 2 , a fuel tank constructed in accordance to one example of prior art is shown and generally identified atreference 10.Fuel tank 10 is a saddle fuel tank having afirst lobe 12 and asecond lobe 14. Thefirst lobe 12 is configured as a fuel inlet side. During a refueling event, the fuel is filled into thefirst lobe 12 before reaching aspillover point 16 where it spills or cascades into thesecond lobe 14. Thesecond lobe 14 includes a fuel limit vent valve (FLVV) 20 having a shut offpoint 22. TheFLVV 20 controls the shut off point of fuel during refueling based on a relationship between the level of fuel and the shut offpoint 22. Thesecond lobe 14 is where thefuel tank 10 controls the shut-off height of the fuel during refueling. However, in some instances after shut-off thefirst lobe 12 and thesecond lobe 14 can have unequal fuel heights. - As shown in
FIG. 3 , afuel tank 10A includes a venturi orslave pump 30. The slave pump 30 can be incorporated in thefirst lobe 12A to pump fuel from thefirst lobe 12A to thesecond lobe 14A. Thesecond lobe 14A includes afuel pump 34. Theslave pump 30 will pump fuel from thefirst lobe 12A to thesecond lobe 14A to level out the first andsecond lobes slave pump 30 will operate to keep a similar level of fuel in both of the first andsecond lobes slave pump 30 may pump fuel from thesecond lobe 14A to thefirst lobe 12A. In some scenarios however, the fuel level will then be above the FLVV shut off point 22 (FIG. 2 ). The shut offpoint 22 is submerged under fuel. When an amount of fuel is used and a refuel event is desired, theFLVV 20 may still remain shut off even if the tank is less than full. In such a scenario theFLVV 20 has not reopened and therefore no vent pathway is available to allow refueling. - Turning now to
FIGS. 1 and 4 , a fuel tank system constructed in accordance to the present disclosure is shown and generally identified atreference numeral 110. Thefuel tank system 110 includes an electronic venting system 112 configured on asaddle fuel tank 114. Thesaddle fuel tank 114 includes afirst lobe 116 and asecond lobe 118. Thefirst lobe 116 andsecond lobe 118 can generally define bulbous portions extending on opposite sides of a recessedcentral portion 119. The electronic venting system 112 can include asolenoid assembly 120 including afirst solenoid 122 and asecond solenoid 124. - A
control module 130 can control the first andsecond solenoids first solenoid 122 is connected to afirst vent line 132. Thesecond solenoid 124 is connected to asecond vent line 134. Thefirst vent line 132 can terminate at afirst vent port 136. Thesecond vent line 134 can terminate at asecond vent port 138. Thevent ports second solenoids vent ports top portion 139 of thesaddle fuel tank 114. Thetop portion 139 can be located generally within the respective first andsecond lobes central portion 119. In this regard, the first andsecond vent ports second vent lobes second solenoids saddle fuel tank 114. - A
liquid trap 140 can include apump 142 such as a venturi pump or jet that drains liquid by way of a vacuum out of theliquid trap 140 when the fuel pump is on. A mechanical liquid vapor discriminating (LVD)valve 148 can be provided at theliquid trap 140. TheLVD valve 148 can include a membrane filter positioned in the internal housing cavity between an inlet and an outlet. The membrane filter can be configured to prevent the passage of liquid through the membrane and allow the passage of air and/or fuel vapor through the membrane. The membrane may be a liquid discriminating membrane. In once configuration, the membrane can be configured so that it does not change the hydrocarbon concentration of the air and/or fuel vapor that passes through the membrane. In other configurations, thepump 142 in theliquid trap 140 can be configured as a solenoid pump for clearing the liquid from theliquid trap 140. A firstfuel level sensor 150 can be disposed in thefirst lobe 116. Asecond level sensor 152 can be disposed in thesecond lobe 118. - During a refueling event with the
fuel tank system 110, when alevel sensor control module 130 can send a signal to one or both of the first andsecond solenoids second vent lines respective vent ports level sensors lobe control module 130 in different ways within the scope of the present disclosure. Once thevent ports fuel tank 114 shuts off and the refilling fuel nozzle is, in turn, caused to shut off. Thesolenoids lines vent ports fuel tank 114, they are above the fuel level thus avoiding the limitations described above with respect to the fuel tank 10 (FIGS. 1 and 2 ). In other words, the level of the liquid in thefuel tank 114 will not interfere with thevent ports FIG. 4 , the fuel may fill thefirst lobe 116 and subsequently spill over into thesecond lobe 118. The venting will be open at thevent ports level sensors - The electronic venting system 112 provided by the
fuel tank system 110 can accurately identify a 100% full fuel condition independent of the fuel height in either of the first andsecond lobes fuel tank system 110 can repeatably attain a 100% fill condition as thevent ports second solenoids - With reference now to
FIGS. 5A and 5B , a fuel tank system 210 constructed in accordance to another example of the present disclosure is shown. The fuel tank system 210 can be constructed similarly to thefuel tank system 110 described above except instead of thecontrol module 130 controlling first andsecond solenoids control module 130 communicates with a cam driventank venting assembly 220. The cam driventank venting assembly 220 includes onerotary actuator 230 and acam 232 to selectivelyopen valves valves respective vent lines second vent lines cam 232 can be rotated to a prescribed position where the desiredvalves cam 232 is configured to close bothvalves FIG. 5B corresponding to a predetermined status being attained by thelevel sensors cam 232 can also be configured to close one of thevalves valves - The foregoing description of the examples has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular example are generally not limited to that particular example, but, where applicable, are interchangeable and can be used in a selected example, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US17/092,530 US20210053437A1 (en) | 2015-04-13 | 2020-11-09 | Electronic venting in a saddle fuel tank |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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US201562146660P | 2015-04-13 | 2015-04-13 | |
US201562161339P | 2015-05-14 | 2015-05-14 | |
PCT/US2016/027226 WO2016168258A1 (en) | 2015-04-13 | 2016-04-13 | Electronic venting in a saddle fuel tank |
US15/782,302 US10828982B2 (en) | 2015-04-13 | 2017-10-12 | Electronic venting in a saddle fuel tank |
US17/092,530 US20210053437A1 (en) | 2015-04-13 | 2020-11-09 | Electronic venting in a saddle fuel tank |
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US15/782,302 Continuation US10828982B2 (en) | 2015-04-13 | 2017-10-12 | Electronic venting in a saddle fuel tank |
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US20210053437A1 true US20210053437A1 (en) | 2021-02-25 |
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US17/092,530 Abandoned US20210053437A1 (en) | 2015-04-13 | 2020-11-09 | Electronic venting in a saddle fuel tank |
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EP (1) | EP3283319B1 (en) |
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Cited By (1)
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US11267334B2 (en) * | 2017-11-03 | 2022-03-08 | Eaton Intelligent Power Limited | Evaporative emissions control system and method for isolating fuel tank from a purge canister |
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WO2018064346A1 (en) * | 2016-09-28 | 2018-04-05 | Eaton Corporation | Evaporative emissions isolation module cam system |
EP3758967A1 (en) * | 2018-02-27 | 2021-01-06 | Eaton Intelligent Power Limited | Evaporative emissions fuel tank venting system with drain pump |
JP7059154B2 (en) * | 2018-09-21 | 2022-04-25 | 日立建機株式会社 | Rolling machine |
WO2020078584A2 (en) * | 2018-10-15 | 2020-04-23 | Eaton Intelligent Power Limited | Evaporative emissions control system and method for isolating fuel tank from a purge canister |
US10906798B2 (en) | 2019-03-12 | 2021-02-02 | Ford Global Technologies, Llc | Systems and methods for reducing saddle fuel tank depressurization time |
CN112360651A (en) * | 2020-10-22 | 2021-02-12 | 亚普汽车部件股份有限公司 | Electric control valve, fuel system, fuel filling and leakage detection and carbon tank desorption method |
CN113931769B (en) * | 2021-10-13 | 2023-03-24 | 亚普汽车部件股份有限公司 | Integrated electric control assembly of fuel system and fuel system control method |
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JPH0752744Y2 (en) * | 1989-04-19 | 1995-12-06 | 富士重工業株式会社 | Fuel tank device |
JPH06156093A (en) * | 1992-11-24 | 1994-06-03 | Aisan Ind Co Ltd | Fuel cutoff valve with float |
AU7374400A (en) * | 1999-09-21 | 2001-04-24 | Federal Mogul Corporation | Fuel transfer pump and control |
JP2003512576A (en) * | 1999-10-28 | 2003-04-02 | バイエリッシェ モートーレン ウエルケ アクチエンゲゼルシャフト | Fuel tank for powered vehicles |
DE10227471A1 (en) * | 2002-06-20 | 2004-01-15 | Daimlerchrysler Ag | Fuel tank system |
DE10227524A1 (en) | 2002-06-20 | 2004-01-08 | Daimlerchrysler Ag | Fuel tank system |
DE10318844A1 (en) * | 2003-04-25 | 2004-11-11 | Siemens Ag | Fuel tank |
DE10335626B4 (en) * | 2003-08-04 | 2006-08-10 | Siemens Ag | Fuel tank for a motor vehicle |
EP1967404A1 (en) * | 2007-03-09 | 2008-09-10 | Delphi Technologies, Inc. | Fuel tank venting and vapour recovery apparatus |
JP4905312B2 (en) * | 2007-10-01 | 2012-03-28 | 日産自動車株式会社 | Fuel tank equipment |
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US9045038B2 (en) * | 2011-12-22 | 2015-06-02 | Eaton Corporation | Liquid trap with integral jet pump |
DE102012012779A1 (en) * | 2012-06-25 | 2014-03-27 | Thomas Magnete Gmbh | Electromagnetic pump |
WO2015020795A1 (en) * | 2013-08-04 | 2015-02-12 | Eaton Corporation | System with liquid containment tank including an in-line liquid vapor discriminating valve external to the tank |
US10400713B2 (en) * | 2014-09-24 | 2019-09-03 | Eaton Corporation | Electrically controlled fuel system module |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11267334B2 (en) * | 2017-11-03 | 2022-03-08 | Eaton Intelligent Power Limited | Evaporative emissions control system and method for isolating fuel tank from a purge canister |
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BR112017021994A2 (en) | 2018-07-10 |
EP3283319A1 (en) | 2018-02-21 |
CN107531146B (en) | 2021-11-05 |
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CN107531146A (en) | 2018-01-02 |
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