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WO2009116065A2 - Nouveau carter de moteur pour moteur à combustion interne à deux cylindres en ligne - Google Patents

Nouveau carter de moteur pour moteur à combustion interne à deux cylindres en ligne Download PDF

Info

Publication number
WO2009116065A2
WO2009116065A2 PCT/IN2009/000024 IN2009000024W WO2009116065A2 WO 2009116065 A2 WO2009116065 A2 WO 2009116065A2 IN 2009000024 W IN2009000024 W IN 2009000024W WO 2009116065 A2 WO2009116065 A2 WO 2009116065A2
Authority
WO
WIPO (PCT)
Prior art keywords
crankcase
oil
cylinder
bearings
balancer shaft
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.)
Ceased
Application number
PCT/IN2009/000024
Other languages
English (en)
Other versions
WO2009116065A3 (fr
Inventor
Narendra Kumar Jain
Hermant Ambadas Malekar
Kedar Digambar Gokhale
Laus Deo Lynd
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.)
Tata Motors Ltd
Original Assignee
Tata Motors Ltd
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 Tata Motors Ltd filed Critical Tata Motors Ltd
Publication of WO2009116065A2 publication Critical patent/WO2009116065A2/fr
Publication of WO2009116065A3 publication Critical patent/WO2009116065A3/fr
Anticipated expiration legal-status Critical
Priority to ZA2010/04988A priority Critical patent/ZA201004988B/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases
    • F02F7/0002—Cylinder arrangements
    • F02F7/0007—Crankcases of engines with cylinders in line

Definitions

  • This invention relates to Internal combustion engine and more particularly this relates to Crank case for inline two cylinder internal combustion engine and further more particularly to a two cylinder inline, four stroke, Gasoline / Diesel / LPG / CNG / Ethanol / Methanol / Gasohol, Multi Point Fuel Injection / Gasoline and Diesel Direct Injection, reciprocating pistons, naturally aspirated / supercharged / Turbocharged / Turbocharged intercooled, and single / double overhead camshaft engine intended for passenger car, light commercial vehicle and other transport / mobility / stationary applications.
  • US 20050061284 describes high pressure die-cast cylinder crankcase with as cast cylinder liners and the process for producing it.
  • the cylinder crankcase may in principle consist of all alloys which are suitable for this process, in particular aluminum alloys but also magnesium alloys.
  • US 6662773 discloses the cylinder crankcase with base body material different than the cylinder wall.
  • the base body 1 of the engine consisting of material A and the cylinder walls 2 of the engine of a second material B, and the lattice-like reinforcement 3 provided between the two materials A and B.
  • crankcase This prior art doesn't cover the design aspects of crankcase and focuses on the material structure aspects of crankcase.
  • US 7073492 describes a light metal cylinder crankcase for combustion engines has cylinder bushings with a running layer that forms the running surface and a rough, external bonding layer for bonding the cylinder bushings to the cylinder crankcase while pouring the cylinder crankcase. At least 60% of the bonding layer relative to the jacket surface of the bonding layer is connected with the casting material of the cylinder crankcase in a material tight manner.
  • the main object of the invention is to have high pressure die cast aluminium two cylinder crankcase with following features.
  • Front side interface suitable for using integrated oil and water pump which can also act as a volute cavity of the water pump.
  • Cylinder crankcase width is reduced by providing blow by passage at the rear side of crankcase, simultaneously maintaining the rear cover position closer to crankcase by providing flange directed inside for oil sump mounting onto rear cover. 13) Suitable for housing drive gears for balancer shaft.
  • a further object is to have cylinder crankcase for an internal combustion 2 cylinder engine suitable for various transmissions viz. manual gearbox, Continuously
  • Variable Transmission mechanical as well as electronic
  • infinitely variable transmission infinitely variable transmission
  • automatic transmission automatic transmission
  • a further object is to have cylinder crankcase stiffened for better NVH properties by suitable contouring and ribs.
  • a further object is to have cylinder crankcase for an internal combustion engine with reduced NVH and low pass by noise level when assembled on passenger cars, light commercial vehicles and other transport / mobility / stationary applications.
  • a further object is to have cylinder crankcase for an internal combustion engine adoptable for various alternate fuels viz. ethanol, methanol, gasohol, Diesel, Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG) and suitable for single fuel / bi-fuel operation.
  • various alternate fuels viz. ethanol, methanol, gasohol, Diesel, Gasoline, Liquid Petroleum Gas (LPG), Compressed Natural Gas (CNG) and suitable for single fuel / bi-fuel operation.
  • a further object is to have cylinder crankcase for an internal combustion engine that can be naturally aspirated, selectively supercharged / turbocharged and/or intercooled depending on the application requirements.
  • a further object is to have cylinder crankcase for an internal combustion engine that can be adoptable for hybrid vehicle applications / operation.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is suitable for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcaseand for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcase is made with high pressure die casting and provided with "in situ" casted liners
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is suitable for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcase is provided with a deep skirt for better NVH characteristics and better structural rigidity which are attained in conventional engines by adding either bed plate or ladder frame below crankcase as an additional member.
  • the invention is also suitable for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcase is designed to have provision for mounting both oil pump and water pump at the front.
  • the invention is suitable for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcase is designed with dedicated oil return passage at the front of the cylinder crankcase which directs the return oil though cylinder block which in turn directed to the sump through an oil drain tube which is press fitted into cylinder crankcase.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is suitable for housing the primary balancer shaft with either two bearing supports on cylinder crankcase or two bearing support on the crankcase is designed with blow-by passage at the front which directs the blow-by gases to an innovative blow-by separation system provided at the cylinder head.
  • the invention discloses an inline two cylinder open deck, deep skirt, high pressure die cast aluminium crankcase housing single primary balancer shaft with front side interface suitable for adopting integral oil and water pump for four-stroke reciprocating piston internal combustion spark ignition engine.
  • the cylinder crankcase is designed for high pressure die cast (aluminium) process for high volume production.
  • the crankcase is designed in such a way that the die does not have complex cores and too many moving sides.
  • the cylinder crankcase design is optimized for mold filling & solidification.
  • cylinder liners are casted in situ.
  • aluminium wall is provided at top of liner. This avoids machining of two dissimilar materials as is in conventional design.
  • the only aluminium at top deck of cylinder liner helps in better sealing and improved reliability by avoiding expansion of dissimilar material as in conventional designs. Cooling water jacket surrounding cylinder liners are open deck for ease of manufacturing.
  • crankcase follows the locus of connecting rod and crankshaft on one side and it follows the locus of balancer shaft on the other side.
  • the special countering on crankcase provide the high stiffness and reduced material content.
  • crankcase is with deep skirt design and does not require bed plate or ladder frame.
  • the oil sump can be sheet metal or aluminum. Oil sump is directly mounted on bottom of block.
  • wall thickness and ribs are optimized using structural and NVH analysis.
  • the cylinder crankcase is designed for low cost by optimizing wall thicknesses, removing the material from non functional area.
  • the cylinder crankcase is designed to house single primary balancer shaft & drive gears for the balancer shaft, the design is such that balancer shaft can be supported on two bearings for low cost design, and for high speed, design balancer shaft can be supported on three bearings. Ttwo bearings out of the three bearings are preferably shell bearings and the third bearing is housed in rear wall and is a bush bearing.
  • the cylinder crankcase front end is designed to have interface with integral oil and water pump.
  • the oil pump is driven by crankshaft & water pump is balancer shaft.
  • crankcase ventilation and oil return from cylinder head To reduce oil consumption separate passages are provided for crankcase ventilation and oil return from cylinder head.
  • the ventilation path in cylinder crankcase houses the innovative oil separation device. The provision is made at front side of cylinder crankcase for return oil to be delivered at bottom of crankcase.
  • the cylinder crankcase has innovative provision of dipstick which passes through oil return passage in to oil sump.
  • the cylinder crankcase has provision for mounting starter motor, oil filter, alternator, compressor etc. auxiliaries.
  • Figure 1 shows an isometric view looking from the front & right hand side of the cylinder crankcase
  • Figure 2 shows an isometric view from the front & left hand side of the cylinder crankcase
  • Figure 3 shows an isometric view of the rear & left hand side of the cylinder crankcase
  • Figure 4 shows an isometric view of the cylinder crankcase from bottom side
  • Figure 5 shows an isometric view of the cylinder crankcase from top side
  • Figure 6 shows sectional view of the cylinder crankcase showing lubrication to main bearing and balancer bearing
  • Figure 7 shows passages for crankcase ventilation & oil return passages
  • Figure 8 shows delivery of return oil below oil level in oil sump
  • Figure 9 shows right hand side view of crankcase for continuously variable transmission version
  • Figure 10 shows mounting arrangement for dipstick and dipstick tube
  • Figure 11 shows separate caps for main bearing and balancer bearing
  • Figure 12 shows combined caps for main bearing and balancer bearing
  • Figure 13 shows arrangement for supporting balancer shaft on two bearings
  • Figure 14 shows arrangement for supporting balancer shaft on three bearings.
  • Figure 1 shows front side view, with bearings (1 &2) for crank shaft (1) and balancer shaft respectively located on bearing wall supported on skirt.
  • As cast oil gallery for supplying oil to cylinder head (10) shows contoured profile for balancer shaft locus (11), skirt (13) below crankshaft centerline (deep skirt), ribs (14) for stiffness and better NVH provision for AC compressor mounting bosses (15), provision for 'C arm (12).
  • Figure 2 shows front and left hand side view, it shows mounting bosses (16) for A arm, used for engine mounting through rubber isolation, three bosses (17) on left side are for alternator mounting, (18) shows contoured profile for crankshaft and connecting rod locus. Provisions (39) are provided for mounting other accessories.
  • Figure 3 shows rear side of cylinder crankcase, ribbed flange (19) is for supporting transmission gear box; it also shows spigot location (20) for starter motor mounting, passage for blow by (21) is sealed by rear cover.
  • the oil filter mounting provision (8) have a central hole (8a) surrounded by a cavity (8b) with an opening (8c) for unfiltered oil entry. The filtered oil from the oil filter is supplied to the main oil gallery (32) through the central hole.
  • Figure 4 shows bottom side of crankcase, it shows housing for crankshaft (22), housing for balancer shaft (23), oil return passage (24), passage for blow by gases (21) , As cast cylinder liner shown by (25) . (26) Shows holes for mounting oil sump.
  • Figure 5 shows inline two cylinders (27), aluminum materials at top of liners (28), shows open deck water jacket surrounding cylinder liner(29) , (24) oil return passage, (21) passage for crankcase gases.
  • Figure 6 section shows cross drill holes for oil supply to main bearing (30) and balancer bearing (31) from single main oil gallery(32).
  • Figure 7 section showing dedicated oil return passage front side of engine and passage for crankcase gases at rear side of engine.
  • the reverse arrangement i.e. passage for blow by at front and oil return passage at rear is also possible option in this design.
  • Figure 8 shows arrangement for delivery of returned oil below oil level and at bottom of oil sump.
  • Oil return passage connected to an oil collector (34) through an oil drain tube (33). The oil collector is located below oil level in the sump (35).
  • Figure 9 shows the bosses (36) provided at the right side of crank case for mounting the Continuous variable transmission.
  • FIG 10 shows mounting arrangement for dipstick (37) and dipstick tube (37a).
  • a provision (38) for mounting dipstick tube provide on the crank case in such way that the dipstick passes through oil return passage into oil sump.
  • Figure 11 shows separate caps for main bearing and balancer bearing.
  • Figure 12 shows combined caps for main bearing and balancer bearing.
  • Figure 13 shows arrangement for supporting balancer shaft on two bearings.
  • Figure 14 shows arrangement for supporting balancer shaft on three bearings, i.e. on two shell bearing and one bush bearing.
  • the crankcase for inline two cylinder open deck is made of Aluminum or Cast iron and is suitable for housing the primary balancer shaft with either two bearing supports on crankcase or three bearing support on the crankcase.
  • Said crankcase has a front side interface suitable for mounting integrated .
  • oil and water pump which is driven by balancer shaft and is designed with dedicated oil return at the front of the crankcase.
  • the interface can be formed in such way that it can also acts as volute cavity of the water pump.
  • a blow-by passage is provided at the rear side of the crankcase.
  • the crankcase has as-cast cylinder liners placed at a distance of about 2- 4mm from the top face of cylinder crankcase to avoid machining of two dissimilar materials at the top.
  • the crankcase is formed with a single main gallery supplying lubrication oil to both the crankshaft bearings and balancer shaft bearings.
  • crankcase is provided with deep skirt, optimized with connecting rod locus, crankshaft locus and balancer shaft locus for better NVH, better stiffness and structural rigidity at low cost compared with conventional crankcase design.
  • the crankcase is suitable for housing the balancer shaft drive gears at the front.
  • the crankcase has provision for mounting dipstick on it for checking the oil level in the oil sump.
  • crankcase has reduced width by providing blow-by passages and oil return passages at the rear and front sides of the crankcase, and with the rear cover flanges directed towards the crankcase side.
  • the cylinder crankcase has separate/integrated caps for crankshaft and balancer shaft.
  • the cylinder crankcase has two shell bearings and one bush bearing for the balancer shaft.
  • the cylinder crankcase has a provision for mounting starter motor.
  • the cylinder crankcase also has provision for oil filter mounting.
  • crankcase is stiffened for better NVH by suitable contouring and ribs.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to the present invention is suitable for various transmissions. Viz. Manual transmission, continuously variable transmission (both mechanical and electronic), Infinitely variable transmission and automatic transmission.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is suitable for an engine adoptable for various alternate fuels viz. Ethanol, methanol, gasohol, diesel, gasoline, liquid petroleum gas (LPG), compressed natural gas (CNG) and suitable for single fuel / bi-fuel operation.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is suitable for an internal combustion engine that can be naturally aspirated, selectively supercharged / turbocharged and/or intercooled depending on the application requirements.
  • the inline two cylinder open deck, high pressure die cast aluminum crankcase according to this invention is also suitable for an internal combustion engine that can be adoptable for hybrid vehicle applications / operation.

Landscapes

  • 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)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne une structure de carter de moteur pour un moteur à combustion interne comprenant une jupe profonde définissant ladite chambre interne de carter de moteur, une pluralité de parois de palier supportées sur ladite jupe, des paliers de vilebrequin et des paliers d'arbre d'équilibrage de vilebrequin situés sur lesdites parois de palier, un passage de gaz de soufflage situé sur le côté arrière ou avant dudit carter de moteur, un passage de retour d’huile situé sur le côté opposé dudit passage de soufflage, et une interface permettant d’installer une pompe à eau et huile intégrée.
PCT/IN2009/000024 2008-01-08 2009-01-07 Nouveau carter de moteur pour moteur à combustion interne à deux cylindres en ligne Ceased WO2009116065A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2010/04988A ZA201004988B (en) 2008-01-08 2010-07-14 A novel crank case for inline two cyclinder ic engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN61/MUM/2008 2008-01-08
IN61MU2008 2008-01-08

Publications (2)

Publication Number Publication Date
WO2009116065A2 true WO2009116065A2 (fr) 2009-09-24
WO2009116065A3 WO2009116065A3 (fr) 2009-11-26

Family

ID=41091327

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2009/000024 Ceased WO2009116065A2 (fr) 2008-01-08 2009-01-07 Nouveau carter de moteur pour moteur à combustion interne à deux cylindres en ligne

Country Status (2)

Country Link
WO (1) WO2009116065A2 (fr)
ZA (1) ZA201004988B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082642A (ja) * 2015-10-27 2017-05-18 スズキ株式会社 内燃機関の潤滑構造及び自動二輪車
CN110296021A (zh) * 2019-08-14 2019-10-01 中船动力研究院有限公司 一种柴油机机架及柴油机
JP2022141731A (ja) * 2020-05-08 2022-09-29 ヤンマーパワーテクノロジー株式会社 エンジン装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104612850B (zh) * 2015-02-12 2018-11-13 河北华北柴油机有限责任公司 12缸柴油机曲轴箱

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1195504B1 (fr) * 2000-10-03 2006-12-27 Mazda Motor Corporation Bloc-moteur pour un moteur à combustion interne
US6904885B2 (en) * 2001-08-24 2005-06-14 Lance Ian Osband Osband super inductionexhaustion valveshaft' engine system, V-Type, flat-type, single-type, multi-cylinder four-cycle engine(s)
JP4511865B2 (ja) * 2004-04-05 2010-07-28 富士重工業株式会社 エンジンのブリーザ装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017082642A (ja) * 2015-10-27 2017-05-18 スズキ株式会社 内燃機関の潤滑構造及び自動二輪車
CN110296021A (zh) * 2019-08-14 2019-10-01 中船动力研究院有限公司 一种柴油机机架及柴油机
JP2022141731A (ja) * 2020-05-08 2022-09-29 ヤンマーパワーテクノロジー株式会社 エンジン装置

Also Published As

Publication number Publication date
WO2009116065A3 (fr) 2009-11-26
ZA201004988B (en) 2011-09-28

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