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Internal combustion engine with improved forced air-cooling

An internal combustion engine, forced air cooling technology, applied in the directions of engine components, engine starting, engine cooling, etc., can solve problems such as obstruction of airflow, adverse effects of engine cooling, adverse effects of engine performance, etc.

Inactive Publication Date: 2010-08-25
巴贾吉汽车公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engines with a starting system that drives the ring gear on the magneto rotor with an inertia clutch have the following disadvantages: In such engines, parts of the ring gear operating device, such as the inertia clutch, protrude into the air passage for cooling Forced air to flow through said air passages; these parts impede the free and unrestricted flow of airflow to the cylinders and cylinder head cooling fins, adversely affecting the cooling of the engine and thereby adversely affecting the performance of the engine

Method used

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  • Internal combustion engine with improved forced air-cooling
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  • Internal combustion engine with improved forced air-cooling

Examples

Experimental program
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Embodiment Construction

[0015] As shown in FIGS. 1 and 2 , a prior art scooter engine 100 includes a crankcase 11 containing a crankshaft 12 . The magneto rotor 13 is fixed on the crankshaft 12 on the other side of the engine 100 opposite to the side where the engine transmission components are installed.

[0016] The ring gear 4 is fixed on the outermost edge 13 a of the outer surface of the magneto rotor 13 away from the centerline C1 of the engine 100 . Centerline C1 intersects the axis of crankshaft 12 . A cooling fan 5 having a plurality of blades 5 a is mounted on the outer surface of the magneto rotor 13 adjacent to and in contact with the ring gear 4 . The starter motor 8 is assembled on the crankcase 11 and cooperates with the ring gear working device or the inertia clutch 7 so as to mesh with the ring gear 4 when starting. Mark the plane passing through the meshing centerline as meshing surface C2. A plane parallel to the engagement plane C2 and passing through the inner edge of the vane...

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Abstract

Disclosed is an internal combustion engine (110) having a forced air-cooling system comprising a fan (25) located outward from a centre line (Cl) of said engine (110) for directing a cooling air flow through an air passage (116) toward engine components to be cooled; a ring gear (24) and ring gear drive (27) co-operable with the ring gear (24) during starting of the engine (110); and a magneto rotor (23) rotated by a crankshaft (22) of the engine (110) wherein said ring gear (24) and said fan (25) are mounted to said magneto rotor (23), the ring gear (24) being mounted inward of and spaced from both the fan (25) and the air passage (116) and towards the centre line (Cl) of the engine (110).

Description

technical field [0001] The present invention relates to an internal combustion engine with an improved forced air cooling system. Background technique [0002] An engine used as a prime mover in a two- or three-wheeled vehicle may be provided with electric or kick start, or both. Typical electric starting systems for such engines are generally of two configurations, ie the starting system operates through a one-way clutch or an inertia clutch. The inertia clutch is a ring gear working mechanism. In systems with starter motors and inertia clutches, these parts are mounted on the crankcase of the engine. The magneto is installed in the upper half of the crankcase, and during normal operation of the engine, the rotation of the crankshaft is transmitted to the magneto rotor through a key. The magneto generates the electricity necessary to operate the ignition, lighting and signaling systems of the engine powered vehicle. The ring gear is usually integrally mounted on the mag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02N15/02F01P5/04F01P5/02
CPCF01P5/04F01P2050/16F01P5/06
Inventor 亚伯拉罕·约瑟夫纳拉西姆汉·拉贾戈帕兰
Owner 巴贾吉汽车公司