EP1995432A1 - Portable engine - Google Patents

Portable engine Download PDF

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Publication number
EP1995432A1
EP1995432A1 EP07010129A EP07010129A EP1995432A1 EP 1995432 A1 EP1995432 A1 EP 1995432A1 EP 07010129 A EP07010129 A EP 07010129A EP 07010129 A EP07010129 A EP 07010129A EP 1995432 A1 EP1995432 A1 EP 1995432A1
Authority
EP
European Patent Office
Prior art keywords
engine
baffle plate
convex rib
engine casing
casing
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.)
Withdrawn
Application number
EP07010129A
Other languages
German (de)
French (fr)
Inventor
Yunfeng Ma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP07010129A priority Critical patent/EP1995432A1/en
Publication of EP1995432A1 publication Critical patent/EP1995432A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P1/00—Air cooling
    • F01P2001/005—Cooling engine rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/06—Guiding or ducting air to, or from, ducted fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/044—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators the engine-generator unit being placed on a frame or in an housing
    • F02B63/048—Portable engine-generator combinations

Definitions

  • the present invention relates to a portable engine.
  • a traditional portable engine adopts a design of an integrated air duct, which cools inner parts with cooling air drawn in by a fan and then expels through a vent groove. In such a way, direction and flow of cooling air cannot be well controlled, the cylinder head cover cannot be well cooled, and it is possible to heat the low-temperature part of the casing with hot air at the cylinder head cover.
  • a purpose of the present invention is to provide a portable engine, which has five air ducts and can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.
  • a technical solution of the present invention is as follows: a portable engine, comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • a further technical solution of the present invention is as follows: a portable engine, comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • a left convex rib extends inward at the junction between the left upper baffle plate and the left lower baffle plate; a right convex rib extends inward at the junction between the right upper baffle plate and the right lower baffle plate;
  • the left and right upper air ducts are composed of the left convex rib, the right convex rib, the cylinder head cover and the engine casing;
  • an upper convex rib extends upward respectively on the left and right sides of the base plate of the engine;
  • the bottom air duct is composed of the two upper convex ribs and the engine casing; and the left and right lower air ducts are composed of the left convex rib, the right convex rib, the upper convex rib and the engine casing.
  • a portable engine comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • a left convex rib extends inward at the junction between the left upper baffle plate and the left lower baffle plate; a right convex rib extends inward at the junction between the right upper baffle plate and the right lower baffle plate;
  • the left and right upper air ducts are composed of the left convex rib, the right convex rib, the cylinder head cover and the engine casing;
  • an upper convex rib extends upward respectively on the left and right sides of the base plate of the engine;
  • the bottom air duct is composed of the two upper convex ribs and the engine casing; and the left and right lower air ducts are composed of the left convex rib, the right convex rib, the upper convex rib and the engine casing.
  • the two lower air ducts are provided at the end close to the fan respectively with an isolating plate, which is provided with several small vent holes and is on the engine casing.
  • a portable engine comprising an engine casing 1, an air deflector cover 2, a fan 3 and an exhaust pipe 4; a left convex rib 18 extends inward at the junction between the left upper baffle plate 5 and the left lower baffle plate 10 at the left part of the engine; a right convex rib 19 extends inward at the junction between the right upper baffle plate 6 and the right lower baffle plate 11 at the right part of the engine; a left convex rib 18 and a right convex rib 19 constitute two left and right upper air ducts 8 and 9 together with a cylinder head cover 7 and the engine casing 1; an upper convex rib 20 extends upward respectively on the left and right sides of the base plate of the engine; the bottom air duct 15 is composed of the two upper convex ribs 20 and the engine casing 1; the left convex rib 18 and the right convex rib 19 constitute two left and right lower air ducts together with the upper
  • the two upper air ducts 8 and 9 cool the cylinder head directly.
  • the two lower air ducts 12 and 13 can dissipate the heat produced by mechanical movements of the lower part of the engine during the engine operation and the heat conducted from the cylinder head.
  • the bottom air duct 15 can cool the cooling fin at the bottom of the engine casing 1, and therefore can well lower temperature of the engine oil.
  • the present invention can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

A portable engine, comprising an engine casing (1), an air deflector cover (2), a fan (3) and an exhaust pipe (4); a left upper baffle plate (5) and a right upper baffle plate (6) at the upper part of the engine constitute two left and right upper air ducts (8,9) together with a cylinder head cover (7) and the engine casing; a left lower baffle plate (10) and a right lower baffle plate (11) at the lower part of the engine constitute two left and right lower air ducts (12,13) together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct (15). The present invention can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a portable engine.
    • BACKGROUND OF THE INVENTION
  • When an engine works, temperature of the cylinder cooling fin is very high, while temperature of the lower part of the casing is a little bit lower. A traditional portable engine adopts a design of an integrated air duct, which cools inner parts with cooling air drawn in by a fan and then expels through a vent groove. In such a way, direction and flow of cooling air cannot be well controlled, the cylinder head cover cannot be well cooled, and it is possible to heat the low-temperature part of the casing with hot air at the cylinder head cover.
    • CONTENTS OF THE INVENTION
  • A purpose of the present invention is to provide a portable engine, which has five air ducts and can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.
  • A technical solution of the present invention is as follows: a portable engine, comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • A further technical solution of the present invention is as follows: a portable engine, comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • A left convex rib extends inward at the junction between the left upper baffle plate and the left lower baffle plate; a right convex rib extends inward at the junction between the right upper baffle plate and the right lower baffle plate; the left and right upper air ducts are composed of the left convex rib, the right convex rib, the cylinder head cover and the engine casing; an upper convex rib extends upward respectively on the left and right sides of the base plate of the engine; the bottom air duct is composed of the two upper convex ribs and the engine casing; and the left and right lower air ducts are composed of the left convex rib, the right convex rib, the upper convex rib and the engine casing.
  • A more detailed technical solution of the present invention is as follows: a portable engine, comprising an engine casing, an air deflector cover, a fan and an exhaust pipe; a left upper baffle plate and a right upper baffle plate at the upper part of the engine constitute two left and right upper air ducts together with a cylinder head cover and the engine casing; a left lower baffle plate and a right lower baffle plate at the lower part of the engine constitute two left and right lower air ducts together with the engine casing; and a base plate of the engine and the engine casing constitute a bottom air duct.
  • A left convex rib extends inward at the junction between the left upper baffle plate and the left lower baffle plate; a right convex rib extends inward at the junction between the right upper baffle plate and the right lower baffle plate; the left and right upper air ducts are composed of the left convex rib, the right convex rib, the cylinder head cover and the engine casing; an upper convex rib extends upward respectively on the left and right sides of the base plate of the engine; the bottom air duct is composed of the two upper convex ribs and the engine casing; and the left and right lower air ducts are composed of the left convex rib, the right convex rib, the upper convex rib and the engine casing.
  • The two lower air ducts are provided at the end close to the fan respectively with an isolating plate, which is provided with several small vent holes and is on the engine casing.
  • The present invention has the following advantages:
    1. 1. The present invention cools the cylinder head directly with the two upper air ducts, which do not use any windshield opening on the engine casing, thus making the cylinder head being cooled with enough amount of air.
    2. 2. The heat produced by mechanical movements of the lower part of the engine during the engine operation and the heat conducted from the cylinder head are dissipated through the two lower air ducts, where the temperature is slightly lower and there is no need for too large air flow, and therefore the isolating plate with small vent holes is provided at the vent of the two lower air ducts, which can appropriately reduce air flow.
    3. 3. The bottom air duct of the present invention can cool the cooling fin at the bottom of the engine casing, and therefore can well lower temperature of the engine oil.
    4. 4. The present invention has five air ducts, and can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.
    BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will be further described below according to drawings and embodiments.
    • Figure 1 is a stereoscopic drawing of the present invention.
    • Figure 2 is an assembly drawing of the present invention (without the power part).
    • Figure 3 is an assembly drawing of the present invention.
    • Figure 4 is a schematic drawing of the air duct distribution of the present invention.
    • Figure 5 is a drawing of the air duct distribution of the present invention.
    • Figure 6 is a drawing of the cooling air direction of the present invention.
  • Where: 1 engine casing; 2 air deflector cover; 3 fan; 4 exhaust pipe; 5 left upper baffle plate; 6 right upper baffle plate; 7 cylinder head cover; 8 upper air duct; 9 upper air duct; 10 left lower baffle plate; 11 right lower baffle plate; 12 lower air duct; 13 lower air duct; 14 base plate; 15 bottom air duct; 16 isolating plate; 17 small vent hole; 18 left convex rib; 19 right convex rib; 20 upper convex rib.
    • DETAILED DESCRIPTION OF THE EMBODIMENTS
  • Embodiment: As shown in Figures 1 to 6, a portable engine, comprising an engine casing 1, an air deflector cover 2, a fan 3 and an exhaust pipe 4; a left convex rib 18 extends inward at the junction between the left upper baffle plate 5 and the left lower baffle plate 10 at the left part of the engine; a right convex rib 19 extends inward at the junction between the right upper baffle plate 6 and the right lower baffle plate 11 at the right part of the engine; a left convex rib 18 and a right convex rib 19 constitute two left and right upper air ducts 8 and 9 together with a cylinder head cover 7 and the engine casing 1; an upper convex rib 20 extends upward respectively on the left and right sides of the base plate of the engine; the bottom air duct 15 is composed of the two upper convex ribs 20 and the engine casing 1; the left convex rib 18 and the right convex rib 19 constitute two left and right lower air ducts together with the upper convex ribs 20 and the engine casing 1; and two lower air ducts 12 and 13 are provided at the end close to the fan 3 respectively with an isolating plate 16, which is provided on the engine casing 1 and with several small vent holes 17.
  • The two upper air ducts 8 and 9 cool the cylinder head directly.
  • The two lower air ducts 12 and 13 can dissipate the heat produced by mechanical movements of the lower part of the engine during the engine operation and the heat conducted from the cylinder head.
  • The bottom air duct 15 can cool the cooling fin at the bottom of the engine casing 1, and therefore can well lower temperature of the engine oil.
  • The present invention can specifically cool each part through controlling air intake of each air duct, thus attaining better cooling effect for the engine.
  • What mentioned above is only an embodiment of the present invention, and cannot limit the extent of protection of the present invention. The present invention can also have other embodiments in addition to the above one. Any technical solution based on equal substitution or equivalent transform falls within the extent of protection the present invention claims.

Claims (4)

  1. A portable engine comprising an engine casing (1), an air deflector cover (2), a fan (3) and an exhaust pipe (4), wherein a left upper baffle plate (5) and a right upper baffle plate (6) at the upper part of the engine constitute two left and right upper air ducts (8,9) together with a cylinder head cover (7) and the engine casing (1), a left lower baffle plate (10) and a right lower baffle plate (11) at the lower part of the engine constitute two left and right lower air ducts (12,13) together with the engine casing (1), and a base plate (14) of the engine and the engine casing (1) constitute a bottom air duct (15).
  2. The portable engine according to claim 1, wherein a left convex rib (18) extends inward at the junction between the left upper baffle plate (5) and the left lower baffle plate (10), a right convex rib (19) extends inward at the junction between the right upper baffle plate (6) and the right lower baffle plate (11), the left and right upper air ducts (8, 9) are composed of the left convex rib (18), the right convex rib (19), the cylinder head cover (7) and the engine casing (1), an upper convex rib (20) extends upward respectively on the left and right sides of the base plate (14) of the engine, the bottom air duct (15) is composed of the two upper convex ribs (20) and the engine casing (1), and the left and right lower air ducts (12,13) are composed of the left convex rib (18), the right convex rib (19), the upper convex rib (20) and the engine casing (1).
  3. The portable engine according to claim 1 or 2, wherein the two lower air ducts (12,13) are provided at the end close to the fan (3) respectively with an isolating plate (16), which is provided with several small vent holes (17).
  4. The portable engine according to claim 3, wherein the isolating plate (16) is provided on the engine casing (1).
EP07010129A 2007-05-22 2007-05-22 Portable engine Withdrawn EP1995432A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07010129A EP1995432A1 (en) 2007-05-22 2007-05-22 Portable engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07010129A EP1995432A1 (en) 2007-05-22 2007-05-22 Portable engine

Publications (1)

Publication Number Publication Date
EP1995432A1 true EP1995432A1 (en) 2008-11-26

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Application Number Title Priority Date Filing Date
EP07010129A Withdrawn EP1995432A1 (en) 2007-05-22 2007-05-22 Portable engine

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014114769A (en) * 2012-12-11 2014-06-26 Fuji Heavy Ind Ltd Axial gap type generator
CN103967606A (en) * 2013-01-24 2014-08-06 曾礼 Fuel-fired pneumatic motor
CN108374713A (en) * 2017-02-01 2018-08-07 Tvs电机股份有限公司 Cooling system for internal combustion engine
US12117213B1 (en) 2018-11-19 2024-10-15 Justin Schaefer Portable internal combustion engine with heating and cooling capabilities

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1247792A (en) * 1968-01-27 1971-09-29 Mosa S R L Internal combustion engine driven electricity generating set
US5121715A (en) * 1990-04-13 1992-06-16 Yamaha Hatsudoki Kabushiki Kaisha Compact power supply
US20020163196A1 (en) * 2001-05-04 2002-11-07 Brofft Roger W. Power box
US20050046191A1 (en) * 2003-08-28 2005-03-03 Mainstream Engineering Corporation. Lightweight portable electric generator
EP1645733A1 (en) * 2003-07-10 2006-04-12 HONDA MOTOR CO., Ltd. Engine-driven electric generator
EP1707776A1 (en) * 2003-10-28 2006-10-04 Henglin Xiao A cooling system of an engine for the inside of a generator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1247792A (en) * 1968-01-27 1971-09-29 Mosa S R L Internal combustion engine driven electricity generating set
US5121715A (en) * 1990-04-13 1992-06-16 Yamaha Hatsudoki Kabushiki Kaisha Compact power supply
US20020163196A1 (en) * 2001-05-04 2002-11-07 Brofft Roger W. Power box
EP1645733A1 (en) * 2003-07-10 2006-04-12 HONDA MOTOR CO., Ltd. Engine-driven electric generator
US20050046191A1 (en) * 2003-08-28 2005-03-03 Mainstream Engineering Corporation. Lightweight portable electric generator
EP1707776A1 (en) * 2003-10-28 2006-10-04 Henglin Xiao A cooling system of an engine for the inside of a generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014114769A (en) * 2012-12-11 2014-06-26 Fuji Heavy Ind Ltd Axial gap type generator
CN103967606A (en) * 2013-01-24 2014-08-06 曾礼 Fuel-fired pneumatic motor
CN108374713A (en) * 2017-02-01 2018-08-07 Tvs电机股份有限公司 Cooling system for internal combustion engine
US12117213B1 (en) 2018-11-19 2024-10-15 Justin Schaefer Portable internal combustion engine with heating and cooling capabilities

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