WO1980001590A1 - Hood,muffler and air cleaner module for an internal combustion engine - Google Patents

Hood,muffler and air cleaner module for an internal combustion engine Download PDF

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Publication number
WO1980001590A1
WO1980001590A1 PCT/US1979/000048 US7900048W WO8001590A1 WO 1980001590 A1 WO1980001590 A1 WO 1980001590A1 US 7900048 W US7900048 W US 7900048W WO 8001590 A1 WO8001590 A1 WO 8001590A1
Authority
WO
WIPO (PCT)
Prior art keywords
hood
muffler
engine
precleaner
internal combustion
Prior art date
Application number
PCT/US1979/000048
Other languages
French (fr)
Inventor
R Shelby
D Wilkins
Original Assignee
Caterpillar Tractor Co
R Shelby
D Wilkins
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Caterpillar Tractor Co, R Shelby, D Wilkins filed Critical Caterpillar Tractor Co
Priority to PCT/US1979/000048 priority Critical patent/WO1980001590A1/en
Priority to JP50139179A priority patent/JPS56500023A/ja
Priority to GB8018002A priority patent/GB2053346B/en
Priority to CA000344512A priority patent/CA1144440A/en
Publication of WO1980001590A1 publication Critical patent/WO1980001590A1/en

Links

Classifications

    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10019—Means upstream of the fuel injection system, carburettor or plenum chamber
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/14—Combined air cleaners and silencers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/161—Arrangement of the air intake system in the engine compartment, e.g. with respect to the bonnet or the vehicle front face

Definitions

  • This invention relates to a hood, muffler and precleaner module which may be removed as a unit from a position surmounting an internal combustion engine compartment.
  • a compartment for an internal combustion engine which has an exhaust system having a manifold and having a muffler above the engine is provided with a hood which is detachably mounted on the compartment in a position spaced above the engine.
  • a muffler for the exhaust system is mounted o.n the underside of the hood and has an exhaust intake pipe which is detachably connected to the manifold by releasable means which is constructed and arranged to be released with the hood in position, so that the hood and the muffler constitute a removable module.
  • Fig. 1 is a longitudinal, vertical sectional view of the apparatus of the invention, with parts broken away, taken substantially as indicated along the line I-I of Fig. 3 with an internal combustion engine with its intake and exhaust manifolds diagrammatically shown;
  • Fig. 2 is a fragmentary plan view of a heavy vehicle equipped with the apparatus of the invention with parts broken away;
  • Fig. 3 is a transverse vertical sectional view taken substantially as indicated along the line III-III of Fig. 2;
  • Fig. 4 is a fragmentary sectional view on an enlarged scale taken substantially as indicated along the line IV-IV of Fig. 2;
  • Fig. 5 is a fragmentary sectional view on an enlarged scale taken substantially as indicated along the line V-V of Fig. 2.
  • C is an engine compartment of a heavy vehicle such, for example, as a track laying tractor, and is defined by a rear wall C1 and a front frame C2.
  • An internal combustion engine such as a high horsepower diesel engine D is mounted in the engine compartment C and is equipped with the usual intake manifold Ml and exhaust manifold M2.
  • the present invention is directed to the mounting of a combustion air precleaner, indicated generally at 10, and an exhaust muffler, indicated generally at 11, both of which are usual and normal accessory devices for an internal combustion engine.
  • a hood is defined by a top wall 13 and side walls 14 and 15 upon which are mounted respective external handrails 14a and 15a.
  • a rear wall 16 and a front wall 17 complete the perimeter of the hood, while a longitudinal central partition 18 divides it into an air cleaner compartment 19 and a muffler compartment 20.
  • the intake air precleaner 10 includes an annular shell 21 having a circumferential flange 22 secured thereto as by welding or riveting. Brackets 23 and 24 welded, respectively, to the hood side wall 14 and the partition 18 provide a mounting to which the flange 22 is detachably secured.
  • the air precleaner 10 has an air delivery throat 25 at its lower end, and a connecting collar 26 is detaqhably secured to the throat 25 and to an air delivery duct 27 by means of removable clamps 26a and 26b.
  • the exhaust muffler 11 has a casing 28 to the lower surface of which a pair of mounting members 29 are welded.
  • An upwardly open box-like bracket 30 has outturned mounting flanges 31, and mounting bolts 31a extend through said flanges and through mating webs 32 and 33 which are integral, respectively, with the side wall 15 and the partition 18 of the hood.
  • the mounting members 29 on the muffler are detachably secured to the box-like bracket 30 by means of bolts and nuts 29a, so the muffler may be easily replaced or serviced by unfastening the bolts 31a and 29a.
  • An annular connecting stub 34 at one end of the muffler casing 28 receives a first collar 35 by means of which an exhaust connecting pipe 36 communicates with the interior of the muffler casing 28; and at a Lower end of the connecting pipe 36 is a second collar 37 by means of which the connecting pipe is detachably connected to the outlet 38 of the exhaust manifold M2.
  • the collars 35 and 37 are both of a readily manually detachable type.
  • An exhaust stack 39 surmounts the muffler casing 28 and extends through a complementary opening in the hood top wall 13.
  • the hood 12 has a rear horizontal web 40 which extends across the lower margin of the rear wall 16, and a pair of gussets 41 which occupy the front outer corners between the front wall 17 and the side walls 14 and 15.
  • the web 40 rests upon a box flange 42 at the rear of the engine compartment C.
  • a single center bolt 44 engages the box rail 42 and the flange 40 to anchor the rear of the hood 12.
  • the front corners of the hood are provided with fixed studs which extend through the gussets 41 and the tabs 43 and have threaded bores. The studs have lower ends 45a below the tabs.
  • Washers 46 bear on the stud ends 45a, and mounting bolts 47 which screw into the studs have heads 47a abutting the washers.
  • the relationship between the studs 45, the tabs 43, the washers 46 and the bolts 47 allows for limited vertical and horizontal movement of the hood gussets 41 relative to the tabs 43.
  • the hood 12 with the combustion air precleaner 10 and the muffler 11 detachably mounted therein provides a module which may be positioned atop the engine compartment with the flange 40 resting upon the rail 42 and the gussets 41 resting upon the tabs 43, and which may then be firmly fixed in place by means of the bolt 44 and the threaded fasteners 45.
  • the clamp 26b is then tightened to firmly secure the collar 26 to the air intake throat 27; and the second collar 37 is similarly secured to the exhaust manifold outlet 38. All that is needed to remove the module is to release the clamp 26b and the collar 37, remove the bolt 44 and the threaded fasteners 45, and lift the entire module off the engine compartment C. This offers full access to the compartment C for doing any necessary work upon the engine D.
  • the module When it becomes necessary to install a new muffler, the module is removed as heretofore described, the bolts 31a are removed to dismount the bracket 30, and the bolts 29a are then removed to detach the muffler11 from the bracket 30 and replace it with a new one.
  • the air cleaner 10 may be separated from the hood 12 by removing the fasteners by which the flange 22 is secured to the brackets 23 and 24.

Abstract

A hood (12) for an internal combustion engine compartment (C) has an air precleaner (10) and a muffler (11) mounted on the underside of the hood (12). The collar (26) connecting the precleaner (10) to the engine air intake (M1), and the pipe (36) from the exhaust manifold (M2) to the muffler (11) are both connected by means (26b, 37) which are releasable with the hood (12) in position, so the hood (12), precleaner (10) and muffler (11) constitute a removable module.

Description

Description
HOOD, MUFFLER AND AIR CLEANER MODULE FOR AN INTERNAL COMBUSTION ENGINE
Technical Field This invention relates to a hood, muffler and precleaner module which may be removed as a unit from a position surmounting an internal combustion engine compartment.
Background Art Large internal combustion engines such, for example, as the diesel engines used in heavy vehicles, commonly have a combustion air precleaner and an exhaust system muffler mounted above the engine so they must be removed before certain types of service on the engine can be performed.
It has been common for the muffler to be mounted on brackets surmounting the engine, so that the muffler brackets often had to be removed.
Disclosure of the Invention The present invention is directed to overcoming one or more of the problems as set forth above. According to the present invention, a compartment for an internal combustion engine which has an exhaust system having a manifold and having a muffler above the engine is provided with a hood which is detachably mounted on the compartment in a position spaced above the engine. A muffler for the exhaust system is mounted o.n the underside of the hood and has an exhaust intake pipe which is detachably connected to the manifold by releasable means which is constructed and arranged to be released with the hood in position, so that the hood and the muffler constitute a removable module. Brief Description of the Drawings
Fig. 1 is a longitudinal, vertical sectional view of the apparatus of the invention, with parts broken away, taken substantially as indicated along the line I-I of Fig. 3 with an internal combustion engine with its intake and exhaust manifolds diagrammatically shown;
Fig. 2 is a fragmentary plan view of a heavy vehicle equipped with the apparatus of the invention with parts broken away; Fig. 3 is a transverse vertical sectional view taken substantially as indicated along the line III-III of Fig. 2;
Fig. 4 is a fragmentary sectional view on an enlarged scale taken substantially as indicated along the line IV-IV of Fig. 2; and
Fig. 5 is a fragmentary sectional view on an enlarged scale taken substantially as indicated along the line V-V of Fig. 2.
Best Mode for Carrying Out the Invention Referring to the drawings, C is an engine compartment of a heavy vehicle such, for example, as a track laying tractor, and is defined by a rear wall C1 and a front frame C2. An internal combustion engine such as a high horsepower diesel engine D is mounted in the engine compartment C and is equipped with the usual intake manifold Ml and exhaust manifold M2. The present invention is directed to the mounting of a combustion air precleaner, indicated generally at 10, and an exhaust muffler, indicated generally at 11, both of which are usual and normal accessory devices for an internal combustion engine.
A hood, indicated generally at 12, is defined by a top wall 13 and side walls 14 and 15 upon which are mounted respective external handrails 14a and 15a. A rear wall 16 and a front wall 17 complete the perimeter of the hood, while a longitudinal central partition 18 divides it into an air cleaner compartment 19 and a muffler compartment 20.
The intake air precleaner 10 includes an annular shell 21 having a circumferential flange 22 secured thereto as by welding or riveting. Brackets 23 and 24 welded, respectively, to the hood side wall 14 and the partition 18 provide a mounting to which the flange 22 is detachably secured. The air precleaner 10 has an air delivery throat 25 at its lower end, and a connecting collar 26 is detaqhably secured to the throat 25 and to an air delivery duct 27 by means of removable clamps 26a and 26b.
The exhaust muffler 11 has a casing 28 to the lower surface of which a pair of mounting members 29 are welded. An upwardly open box-like bracket 30 has outturned mounting flanges 31, and mounting bolts 31a extend through said flanges and through mating webs 32 and 33 which are integral, respectively, with the side wall 15 and the partition 18 of the hood. The mounting members 29 on the muffler are detachably secured to the box-like bracket 30 by means of bolts and nuts 29a, so the muffler may be easily replaced or serviced by unfastening the bolts 31a and 29a.
An annular connecting stub 34 at one end of the muffler casing 28 receives a first collar 35 by means of which an exhaust connecting pipe 36 communicates with the interior of the muffler casing 28; and at a Lower end of the connecting pipe 36 is a second collar 37 by means of which the connecting pipe is detachably connected to the outlet 38 of the exhaust manifold M2. The collars 35 and 37 are both of a readily manually detachable type.
An exhaust stack 39 surmounts the muffler casing 28 and extends through a complementary opening in the hood top wall 13.
The hood 12 has a rear horizontal web 40 which extends across the lower margin of the rear wall 16, and a pair of gussets 41 which occupy the front outer corners between the front wall 17 and the side walls 14 and 15. The web 40 rests upon a box flange 42 at the rear of the engine compartment C. As seen in Figs. 2 and 4, a single center bolt 44 engages the box rail 42 and the flange 40 to anchor the rear of the hood 12. As best seen in Fig. 5, the front corners of the hood are provided with fixed studs which extend through the gussets 41 and the tabs 43 and have threaded bores. The studs have lower ends 45a below the tabs. Washers 46 bear on the stud ends 45a, and mounting bolts 47 which screw into the studs have heads 47a abutting the washers. The relationship between the studs 45, the tabs 43, the washers 46 and the bolts 47 allows for limited vertical and horizontal movement of the hood gussets 41 relative to the tabs 43.
Industrial Applicability
In practice, the hood 12 with the combustion air precleaner 10 and the muffler 11 detachably mounted therein provides a module which may be positioned atop the engine compartment with the flange 40 resting upon the rail 42 and the gussets 41 resting upon the tabs 43, and which may then be firmly fixed in place by means of the bolt 44 and the threaded fasteners 45. The clamp 26b is then tightened to firmly secure the collar 26 to the air intake throat 27; and the second collar 37 is similarly secured to the exhaust manifold outlet 38. All that is needed to remove the module is to release the clamp 26b and the collar 37, remove the bolt 44 and the threaded fasteners 45, and lift the entire module off the engine compartment C. This offers full access to the compartment C for doing any necessary work upon the engine D.
When it becomes necessary to install a new muffler, the module is removed as heretofore described, the bolts 31a are removed to dismount the bracket 30, and the bolts 29a are then removed to detach the muffler11 from the bracket 30 and replace it with a new one. Similarly, the air cleaner 10 may be separated from the hood 12 by removing the fasteners by which the flange 22 is secured to the brackets 23 and 24.
Other aspects, objects and advantages of this invention can be obtained from a study of the drawings, the disclosure and the appended claims. The foregoing detailed description has been given for clearness of understanding only and no unnecessary limitations should be understood therefrom as modifications will' be obvious to those skilled in the art.

Claims

Claims
1. In a compartment (C) for an internal combustion engine (D) with an exhaust system having a manifold (M2) and having a muffler (11) above the engine (D), the improvement comprising: a hood (12) detachably mounted on the compartment (C) in a position spaced above the engine (D); a muffler (11) for the exhaust system which has an exhaust intake pipe (36); means (29, 29a, 30, 31, 31a) mounting the muffler (11) on the underside of the hood (12); and releasable means (37.) detachably connecting the exhaust intake pipe (36) to the manifold (38-M2), said releasable means (37) being constructed and arranged to be released with the hood (12) in position, whereby the hood (12) and muffler (11) constitute a removable module.
2. In a compartment (C) for an internal combustion engine (D) with an exhaust system having a manifold (M2) and having a muffler (11) above the engine (D), and having a combustion air precleaner (10) for the engine air intake manifold (M2), the improvement comprising: a hood (12) detachably mounted on the compartment (C) in a position spaced above the engine (D): a muffler (11) for the exhaust system which has an exhaust intake pipe (36); means (29 , 29a, 30 , 31, 31a) mounting the muffler (11) on the underside of the hood (12); first releasable means (37) detachably connecting the exhaust intake pipe to the manifold, said first releasable means (37) being constructed and arranged to be released with the hood (12) in position; an air precleaner (10) which has an air delivery collar (26) connected to the engine air intake manifold (M1); means (22,23,24) mounting the precleaner (10) on the underside of the hood (12); and second releasable means (26b) detachably connecting said air delivery collar (26) to the engine air intake manifold (M1), said second releasable means (26b) being constructed and arranged to be released with the hood (12) in position, whereby the hood (12), muffler (11) and precleaner (10) constitute a removable module.
3. The improvement of claim 1 or claim 2 in which the means (29, 29a, 30, 31, 31a, 22, 23, 24) mounting the muffler (11) and the precleaner (10) on the hood (12) comprises brackets (31,32) detachably mounted in the hood (12).
PCT/US1979/000048 1979-01-31 1979-01-31 Hood,muffler and air cleaner module for an internal combustion engine WO1980001590A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/US1979/000048 WO1980001590A1 (en) 1979-01-31 1979-01-31 Hood,muffler and air cleaner module for an internal combustion engine
JP50139179A JPS56500023A (en) 1979-01-31 1979-01-31
GB8018002A GB2053346B (en) 1979-01-31 1979-01-31 Hood muffler and air cleaner module for an internal combustion engine
CA000344512A CA1144440A (en) 1979-01-31 1980-01-28 Hood, muffler and air cleaner module for internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1979/000048 WO1980001590A1 (en) 1979-01-31 1979-01-31 Hood,muffler and air cleaner module for an internal combustion engine
WOUS79/00048 1979-01-31

Publications (1)

Publication Number Publication Date
WO1980001590A1 true WO1980001590A1 (en) 1980-08-07

Family

ID=22147496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1979/000048 WO1980001590A1 (en) 1979-01-31 1979-01-31 Hood,muffler and air cleaner module for an internal combustion engine

Country Status (3)

Country Link
JP (1) JPS56500023A (en)
GB (1) GB2053346B (en)
WO (1) WO1980001590A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856439A (en) * 1973-06-27 1974-12-24 Chicago Pneumatic Tool Co Sound proofed and air cooled shell for portable air compressor
US4141334A (en) * 1976-07-30 1979-02-27 Motorenfabrik Hatz Gmbh & Co. Kg Sound-proofed internal combustion engine
US4149512A (en) * 1975-10-23 1979-04-17 Motorenfabrik Hatz Gmbh & Co. Kg Internal combustion engine having a noise deadening shroud

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856439A (en) * 1973-06-27 1974-12-24 Chicago Pneumatic Tool Co Sound proofed and air cooled shell for portable air compressor
US4149512A (en) * 1975-10-23 1979-04-17 Motorenfabrik Hatz Gmbh & Co. Kg Internal combustion engine having a noise deadening shroud
US4141334A (en) * 1976-07-30 1979-02-27 Motorenfabrik Hatz Gmbh & Co. Kg Sound-proofed internal combustion engine

Also Published As

Publication number Publication date
GB2053346B (en) 1983-02-09
GB2053346A (en) 1981-02-04
JPS56500023A (en) 1981-01-08

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