US2767697A - Engine as a brake - Google Patents

Engine as a brake Download PDF

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Publication number
US2767697A
US2767697A US391222A US39122253A US2767697A US 2767697 A US2767697 A US 2767697A US 391222 A US391222 A US 391222A US 39122253 A US39122253 A US 39122253A US 2767697 A US2767697 A US 2767697A
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United States
Prior art keywords
engine
brake
valve
exhaust
fuel
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Expired - Lifetime
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US391222A
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Stanley M Udale
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Holley Performance Products Inc
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Holley Carburetor Co
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Publication date
Application filed by Holley Carburetor Co filed Critical Holley Carburetor Co
Priority to US391222A priority Critical patent/US2767697A/en
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Publication of US2767697A publication Critical patent/US2767697A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2760/00—Control of valve gear to facilitate reversing, starting, braking of four stroke engines
    • F01L2760/003—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake
    • F01L2760/004—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake whereby braking is exclusively produced by compression in the cylinders

Definitions

  • ENGINE AS A BRAK YFiled NOV. l0 1955 United States Patent fiice 2,767,697 Patented Oct. 23, 1956 ENGINE AS A BRAKE Stanley M. Udale, Detroit, Mich., assignor to Holley Carburetor Company, Detroit, Mich., a corporation of Michigan Application November 10, 1953, Serial No. 391,222 1 Claim. (Cl. 12S-97)
  • the object of this invention is to reduce the wear on the brake drums and linings and also the fuel consumption, and to keep the engine warm when descending a long, steep hill with no heat of combustion.
  • A is the dash control rod by a ball check.
  • B is the fuel shut off valve.
  • C is the lever which transmits motion from the dash control rod A to the fuel shut olf valve.B.
  • D is the exhaust manifold and outlet.
  • E is the eccentric exhaust throttle valve in D which creates the back pressure on the exhaust manifold.
  • G is the ordinary throttle control rod and is usually controlled by a foot accelerator.
  • a manually operated, dash controlled exhaust valve for the exhaust manifold of an internal combustion engine adapted to be controlled by the driver of an automotive vehicle including an exhaust outlet, a manually operated dash control, a spring connected thereto, an unbalanced exhaust valve located in said exhaust outlet, the unbalance causing the exhaust pressure to open the valve, a lever ytherefor connected to said spring so that there is established a substantially constant back pressure in said exhaust outlet when said dash control is put into its operative position, and in which there is a fuel cut-off valve means interconnecting said fuel cutolf valve and said exhaust pressure regulating valve, so as to save fuel when the engine acts as a brake, and in which there is an air entrance to said engine, a throttle therefor, means for opening said :throttle to render the means set forth above more effective as an engine brake.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

oct. 23, "1956 s. M. UDALE '2,767,697
ENGINE AS A BRAK YFiled NOV. l0, 1955 United States Patent fiice 2,767,697 Patented Oct. 23, 1956 ENGINE AS A BRAKE Stanley M. Udale, Detroit, Mich., assignor to Holley Carburetor Company, Detroit, Mich., a corporation of Michigan Application November 10, 1953, Serial No. 391,222 1 Claim. (Cl. 12S-97) The object of this invention is to reduce the wear on the brake drums and linings and also the fuel consumption, and to keep the engine warm when descending a long, steep hill with no heat of combustion.
Briefly, if a definite back pressure is established in the exhaust manifold and the fuel is shut off, fuel will be saved and the engine will be kept warm by acting as an air pump which will convert the work of the air pump into heat. This work relieves the brakes from being over-heated.
The figure shows diagrammatically the preferred form of my invention.
In the iigures:
A is the dash control rod by a ball check.
B is the fuel shut off valve.
C is the lever which transmits motion from the dash control rod A to the fuel shut olf valve.B.
D is the exhaust manifold and outlet.
E is the eccentric exhaust throttle valve in D which creates the back pressure on the exhaust manifold.
F is the spring which regulates this back pressure by imposing a closing torque `on the valve E to oppose the flow of exhaust gas.
G is the ordinary throttle control rod and is usually controlled by a foot accelerator.
which may be held in place Operation Normally the rod A is pushed to the right away from position shown. On descending a long hill the dash control A is first pulled all the way to the left and the fuel valve B is thus closed and exhaust Valve E is also moved into its closed position as shown. The engine immediately builds up back pressure in the exhaust manifold D as determined by the spring F and the eccentric exhaust valve E. In order to increase the brake effect, the throttle `rod G is moved to the left so as to open the throttle and to admit more air to the inlet and exhaust manifolds to build up more pressure. The driver thus uses the foot accelerator before he applies the foot operated brake. The brake drums and, what is more important, the non-metallic brake linings are thus not burned out even on steepest, longest hills and the engine remains warm. Meanwhile, the valve B cuts off all the fuel and thus there is a saving in both the expense of brake linings and of the fuel.
What I claim is:
A manually operated, dash controlled exhaust valve for the exhaust manifold of an internal combustion engine adapted to be controlled by the driver of an automotive vehicle including an exhaust outlet, a manually operated dash control, a spring connected thereto, an unbalanced exhaust valve located in said exhaust outlet, the unbalance causing the exhaust pressure to open the valve, a lever ytherefor connected to said spring so that there is established a substantially constant back pressure in said exhaust outlet when said dash control is put into its operative position, and in which there is a fuel cut-off valve means interconnecting said fuel cutolf valve and said exhaust pressure regulating valve, so as to save fuel when the engine acts as a brake, and in which there is an air entrance to said engine, a throttle therefor, means for opening said :throttle to render the means set forth above more effective as an engine brake.
References Cited in the lile of this patent UNITED STATES PATENTS 1,247,930 Campbell Nov. 27, 1917 1,483,657 Glidden Feb. 12, 1924 1,483,658 Glidden Feb. 12, 1924 1,620,100 Hoxton Mar. 8, 1927 1,752,229 Brueckel Mar. 25, 1930 2,415,491 Hieger Feb. 11, 1947
US391222A 1953-11-10 1953-11-10 Engine as a brake Expired - Lifetime US2767697A (en)

Priority Applications (1)

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US391222A US2767697A (en) 1953-11-10 1953-11-10 Engine as a brake

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059941A (en) * 1959-02-11 1962-10-23 Kaynor Resilient pipe joint
US3838670A (en) * 1972-07-10 1974-10-01 L King Exhaust brake
US3960122A (en) * 1973-03-30 1976-06-01 Daimler-Benz Aktiengesellschaft Engine exhaust brake for otto-engines operated with gas
US4093046A (en) * 1976-12-30 1978-06-06 Cummins Engine Company, Inc. Exhaust braking apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1247930A (en) * 1917-04-12 1917-11-27 Bert L Campbell Compression-brake.
US1483658A (en) * 1923-02-06 1924-02-12 Arthur R Glidden Fuel economizer for internal-combustion engines
US1483657A (en) * 1921-04-11 1924-02-12 Arthur R Glidden Controlling device for internal-combustion engines
US1620100A (en) * 1923-06-20 1927-03-08 Llewellyn G Hoxton Means for braking engine-driven vehicles
US1752229A (en) * 1925-11-07 1930-03-25 Lee D Brueckel Compression brake
US2415491A (en) * 1945-09-29 1947-02-11 George M Holley Decelerator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1247930A (en) * 1917-04-12 1917-11-27 Bert L Campbell Compression-brake.
US1483657A (en) * 1921-04-11 1924-02-12 Arthur R Glidden Controlling device for internal-combustion engines
US1483658A (en) * 1923-02-06 1924-02-12 Arthur R Glidden Fuel economizer for internal-combustion engines
US1620100A (en) * 1923-06-20 1927-03-08 Llewellyn G Hoxton Means for braking engine-driven vehicles
US1752229A (en) * 1925-11-07 1930-03-25 Lee D Brueckel Compression brake
US2415491A (en) * 1945-09-29 1947-02-11 George M Holley Decelerator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059941A (en) * 1959-02-11 1962-10-23 Kaynor Resilient pipe joint
US3838670A (en) * 1972-07-10 1974-10-01 L King Exhaust brake
US3960122A (en) * 1973-03-30 1976-06-01 Daimler-Benz Aktiengesellschaft Engine exhaust brake for otto-engines operated with gas
US4093046A (en) * 1976-12-30 1978-06-06 Cummins Engine Company, Inc. Exhaust braking apparatus

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