Snowmobile four-cycle engine arrangement

Assignee: Suzuki Motor Corp

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Filing: 2001-08-10

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Granted: 2003-05-13

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Expires: 2021-08-10

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Abstract

Abstract A snowmobile four-cycle engine arrangement, includes: a four-cycle engine arranged in an engine compartment formed in the front body of a snowmobile with its crankshaft laid substantially parallel to the body width and having a cylinder case inclined forwards with respect to the vehicle's direction of travel. The engine employs a dry sump oil supplying system and an oil tank separate from the engine is provided. Another snowmobile four-cycle engine arrangement includes: a four-cycle engine having a cylinder head at its top, arranged in the engine compartment and inclined forwards with respect to the vehicle's direction of travel with an intake path provided on the upper portion of the engine body. An intercooler for cooling the intake air is arranged in a tunnel created inside the body frame for accommodating a track belt.

Inventors

👤 Yasuaki Yatagai
👤 Hitoshi Matsumura
👤 Hiroaki Shichi

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-11-05 22:45

CPC Classifications

B; B62; B62M; B62M27/00; B62M27/02; B62M2027/023; B62M2027/026; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027

Claims Analysis

Total Claims: 5

Claim 1

Independent Claim 172 words

A snowmobile four-cycle engine arrangement, comprising: a four-cycle engine arranged in an engine compartment having a bottom and formed in the front body of a snowmobile, the engine having a crankshaft laid substantially parallel to the body width and having a cylinder portion inclined forwards with respect to the vehicle's direction of travel, the engine employing a dry sump oil supplying system; an oil tank provided in the engine compartment, separately from the engine, wherein the oil tank is arranged in front of the engine and on the top of a front suspension housing which is projected upwards from the bottom of the engine compartment; and an oil pan is arranged adjacent to an inclined track housing and close to the bottom of the engine compartment, wherein the engine compartment has an opening port with a mating openable and closable lid element at its bottom for creating communication between an inside of the engine compartment and an external space at a position opposing the bottom of the oil pan of the engine.

Claim 2

Dependent Claim 172 words

Claim 3

Dependent Claim 126 words

A snowmobile four-cycle engine arrangement, comprising: a four-cycle engine arranged in an engine compartment having a bottom and formed in the front body of a snowmobile, the engine having a crankshaft laid substantially parallel to the body width and having a cylinder portion inclined forwards with respect to the vehicle's direction of travel, the engine coupled to a heat exchanger for cooling engine oil or air to be supplied to the engine; the engine employing a dry sump oil supplying system; and an oil tank provided in the engine compartment, separately from the engine, wherein the oil tank is arranged in the rear of the engine and on the upper face of a track housing which is projected upwards from the bottom of the engine compartment.

Claim 4

Dependent Claim 126 words

A snowmobile four-cycle engine arrangement, comprising: a four-cycle engine arranged in an engine compartment having a bottom and formed in the front body of a snowmobile, the engine having a crankshaft laid substantially parallel to the body width and having a cylinder portion inclined forwards with respect to the vehicle's direction of travel, the engine coupled to a heat exchanger for cooling engine oil or air to be supplied to the engine; the engine employing a dry sump oil supplying system; and an oil tank provided in the engine compartment, separately from the engine, wherein the oil tank is arranged in the rear of the engine and on the upper face of a track housing which is projected upwards from the bottom of the engine compartment.

Claim 5

Dependent Claim 77 words

The snowmobile four-cycle engine arrangement according to claim 2 , wherein an oil pan is arranged adjacent to an inclined track housing and close to the bottom of the engine compartment, wherein the engine compartment has an opening port with a mating openable and closable lid element at its bottom for creating communication between an inside of the engine compartment and an external space at a position opposing the bottom of the oil pan of the engine.

References Cited (Backward Citations)

JPS5286615A Cited

US5474146A Cited

US6170589B1 Cited

US5899186A Cited

JPH09324649A Cited

US5899779A Cited

US20010001995A1 Cited

JPH10238359A Cited

US6322409B1 Cited

US6439328B1 Cited

US20020000224A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2006-05-12	2006-11-11	2007-05-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2010-05-12	2010-11-11	2011-05-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2014-05-12	2014-11-11	2015-05-13	$7700.00	Window Closed / Lapsed

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