US20140318110A1 - V slot flow - Google Patents

V slot flow Download PDF

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Publication number
US20140318110A1
US20140318110A1 US13/815,245 US201313815245A US2014318110A1 US 20140318110 A1 US20140318110 A1 US 20140318110A1 US 201313815245 A US201313815245 A US 201313815245A US 2014318110 A1 US2014318110 A1 US 2014318110A1
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US
United States
Prior art keywords
exhaust
slot
stack
exhaust stack
exhaust gases
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US13/815,245
Inventor
James Gary Morris
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Individual
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Individual
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Publication date
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Priority to US13/815,245 priority Critical patent/US20140318110A1/en
Publication of US20140318110A1 publication Critical patent/US20140318110A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure

Definitions

  • This invention relates to a slot that can be manufactured in the upper portion of the exhaust stack or be retro fitted to existing stacks already in use.
  • a slot which is a cut and an indention, in the upper outter curve of the exhaust stack enables air to be introduced into the stack while the diesel truck is moving forward. This creates a suction which pulls the exhaust from the engines stacks.
  • the indention in the slot manufacturedly pressed inward, narrows the passage of exhaust in the curved portion of the stack. The exhaust enters this narrowed passage and accelerates. This acceleration of exhaust flow is resultant of Bernoulli's Principle.
  • the two actions help reduce back pressure enabling the diesel engine to operate more efficiently and this will improve fuel economy.
  • FIG. 1 shows the side view of the exhaust stack.
  • the V Slot is illustrated from the side FIG. 1 c and 1 e .
  • Truck vehicle movement illustrated 1 b creates air flow 1 c combined with exhaust flow gases 1 a mixed and exits 1 d.
  • FIG. 2 is the front view of exhaust stack.
  • FIG. 2 illustrates exhaust entry 2 a from the diesel engine and entry of air flow into the forward facing exhaust stack 2 b.
  • FIG. 3 is the front view of the diesel truck.
  • the V Slot is illustrated 3 a by the two arrows pointing to V Slots located on the front of the exhaust stacks.
  • the V SLOT is manufactured with a reference line drawn on the forward facing stack ( 1 c, 2 c , 3 a ) as a guide to cut a line or incision into the exhaust stack.
  • the location of this line is centered opposite side of the inside apex 1 g and centered on the forward facing middle of the exhaust stack 2 c.
  • the cut line ( 1 c and 2 c ) will be a length of five inches centered on the forward facing stack 2 c for a five inch diameter exhaust stack. This portion of material 1 c is pressed down one and three quarters of an inch (1.75).
  • a four inch diameter exhaust stack will have a four inch reference line as a guide to cut a line or incision into the exhaust stack ( 1 c and 2 c ).
  • V SLOT can be manufactured to a different size exhaust stacks with different measurements and there for practiced other than specifically described.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

Exhaust pipe or exhaust stack 3 a extending vertical from the trucks diesel engine is modified with a slot to reduce back pressure. This pressure reduction enables the engine to operate more efficiently resulting in improved fuel economy.

Description

    BACKGROUND OF INVENTION
  • This invention relates to a slot that can be manufactured in the upper portion of the exhaust stack or be retro fitted to existing stacks already in use.
    • SUMMARY OF INVENTION
  • A slot, which is a cut and an indention, in the upper outter curve of the exhaust stack enables air to be introduced into the stack while the diesel truck is moving forward. This creates a suction which pulls the exhaust from the engines stacks. The indention in the slot, manufacturedly pressed inward, narrows the passage of exhaust in the curved portion of the stack. The exhaust enters this narrowed passage and accelerates. This acceleration of exhaust flow is resultant of Bernoulli's Principle.
  • The two actions help reduce back pressure enabling the diesel engine to operate more efficiently and this will improve fuel economy.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows the side view of the exhaust stack. The V Slot is illustrated from the side FIG. 1 c and 1 e. Truck vehicle movement illustrated 1 b creates air flow 1 c combined with exhaust flow gases 1 a mixed and exits 1 d.
  • FIG. 2 is the front view of exhaust stack. FIG. 2 illustrates exhaust entry 2 a from the diesel engine and entry of air flow into the forward facing exhaust stack 2 b.
  • FIG. 3 is the front view of the diesel truck. In FIG. 3 the V Slot is illustrated 3 a by the two arrows pointing to V Slots located on the front of the exhaust stacks.
    •  DETAILED DESCRIPTION OF FIRST EMBODIMENT
  • Referring to FIG. 1, FIG. 2, FIG. 3 of the drawings. The V SLOT is manufactured with a reference line drawn on the forward facing stack (1 c, 2 c, 3 a) as a guide to cut a line or incision into the exhaust stack. The location of this line is centered opposite side of the inside apex 1 g and centered on the forward facing middle of the exhaust stack 2 c.
  • The cut line (1 c and 2 c) will be a length of five inches centered on the forward facing stack 2 c for a five inch diameter exhaust stack. This portion of material 1 c is pressed down one and three quarters of an inch (1.75).
    • The V SLOT is formed by this action which creates a narrowed passage inside the pipe or stack if. A low pressure area is created (Bernoulli's Principle) which helps accelerate the exhaust gases along with air flow 1 c, creating a suction affect.
  • A four inch diameter exhaust stack will have a four inch reference line as a guide to cut a line or incision into the exhaust stack (1 c and 2 c).
    • This portion of material is pressed down to one inch to form the V SLOT. Same effect and procedures as in paragraph [0009].
  • The V SLOT can be manufactured to a different size exhaust stacks with different measurements and there for practiced other than specifically described.

Claims (3)

1. The V SLOT creates less back pressure in the exhaust stack. This is accomplish-by creating a suction and a low pressure in the exhaust stack.
2. The suction of claim 1 is created when the truck vehicle is traveling forward faster than the exhaust gases are flowing inside the exhaust stack prior to the V SLOT. The vehicle moving forward 60 mph exceeds the exhaust gases flowing 20 mph inside the exhaust stack. This excess air flow (40 mph) thru the V SLOT helps extract or suck the exhaust gases out.
3. The low pressure of claim 1 is created when the exhaust gases travel thru the narrowed exhaust stack. This narrowed portion is formed by the V SLOT at the inner apex of the exhaust stack's curve. This creates a low pressure (gases flowing thru) area in relation to the outside atmospheric pressure. (Bernoulli's Principle) This accelerates the exhaust gases reducing back pressure which contributes to better fuel economy.
US13/815,245 2013-04-25 2013-04-25 V slot flow Abandoned US20140318110A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/815,245 US20140318110A1 (en) 2013-04-25 2013-04-25 V slot flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/815,245 US20140318110A1 (en) 2013-04-25 2013-04-25 V slot flow

Publications (1)

Publication Number Publication Date
US20140318110A1 true US20140318110A1 (en) 2014-10-30

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Family Applications (1)

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US13/815,245 Abandoned US20140318110A1 (en) 2013-04-25 2013-04-25 V slot flow

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1388554A (en) * 1920-03-17 1921-08-23 Harry F Dubben Muffler
US5722235A (en) * 1996-08-26 1998-03-03 Ccl, Inc. Exhaust gas back pressure attenuator for truck exhaust stacks
US20090120066A1 (en) * 2007-11-14 2009-05-14 Paccar Inc. Cooling device for high temperature exhaust

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1388554A (en) * 1920-03-17 1921-08-23 Harry F Dubben Muffler
US5722235A (en) * 1996-08-26 1998-03-03 Ccl, Inc. Exhaust gas back pressure attenuator for truck exhaust stacks
US20090120066A1 (en) * 2007-11-14 2009-05-14 Paccar Inc. Cooling device for high temperature exhaust

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