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  Mounting structure for internal combustion engine on small planing boatUSPTO Application #: 20080014808Title: Mounting structure for internal combustion engine on small planing boat Abstract: Providing a mounting structure for an internal combustion engine on a small planing boat on which an internal combustion engine for driving a jet propulsion pump is mounted, in a boat body between a hull and a deck, with a crankshaft thereof oriented in a front-rear direction of the boat body and on which a cylinder of the internal combustion engine is slantly disposed to one of left and right sides of the boat body, the mounting structure taking a weight balance of the internal combustion engine into account. A distance between an axis of the crankshaft and one mounting bracket arranged on a side where the cylinder of the internal combustion engine is slantly disposed, is longer than a distance between the axis of the crankshaft and the other mounting bracket arranged on the opposite side thereof. (end of abstract) Agent: Birch Stewart Kolasch & Birch - Falls Church, VA, US Inventors: Yosuke Hoi, Takayoshi Miura, Yoshiaki Noda USPTO Applicaton #: 20080014808 - Class: 440111 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20080014808. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001]The present application claims priority under 35 USC 119 to Japanese Patent Application No. 2006-157519 filed on Jun. 6, 2006 the entire contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002]1. Field of the Invention [0003]The present invention relates to a mounting structure for an internal combustion engine on a small planing boat. [0004]2. Description of Background Art [0005]In the past, in a mounting structure for an internal combustion engine for a small planing boat wherein the cylinders of an internal combustion engine are slantly disposed to the left or right side of the boat body, the conventional engine mounting brackets are provided on both sides of a crankshaft used to be equidistance away from the crankshaft axis. See, for example JP-A No. 2003-26092. SUMMARY AND OBJECTS OF THE INVENTION [0006]The present invention is aimed at providing a mounting structure for an internal combustion engine for a small planing boat with a weight balance of the internal combustion engine taken into account. It is also an aim of the present invention to provide a mounting structure for an internal combustion engine for a small planing boat, wherein the mounting structure allows the internal combustion engine to be removed with ease through a small removal opening provided in the boat body. [0007]To achieve the above aims, an embodiment of the present invention provides a mounting structure for an internal combustion engine for a small planing boat wherein an internal combustion engine for driving a jet propulsion pump is mounted, in a boat body between a hull and a deck, with a crankshaft thereof oriented in a front-rear direction of the boat body and on which a cylinder of the internal combustion engine is slantly disposed to one of left and right sides of the boat body. A distance between an axis of the crankshaft and one mounting bracket arranged on a side where the cylinder of the internal combustion engine is slantly disposed, is longer than a distance between the axis of the crankshaft and the other mounting bracket arranged on the opposite side thereof. [0008]An embodiment of the present invention provides a mounting structure for an internal combustion engine for a small planing boat wherein an intake port is provided on the side where the cylinder of the internal combustion engine is not slantly disposed. [0009]According to an embodiment of the present invention, the internal combustion engine is balanced weightwise in its lateral direction, so that it can be stably supported. [0010]According to an embodiment of the present invention it is possible to remove the internal combustion engine from the boat body without removing the intake pipe and intake devices connected to the intake port. On the intake side of the internal combustion engine, as compared with the exhaust side, many devices are disposed along with many wires and cables including a throttle wire, so that removing such devices is troublesome. Mounting the internal combustion engine in a laterally inclined position and disposing the intake devices on a more spacious side enables the internal combustion engine to be removed through a small removal opening without removing the intake pipe and intake devices. [0011]Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. BRIEF DESCRIPTION OF THE DRAWINGS [0012]The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein: [0013]FIG. 1 is a side view of a small planing boat 1 equipped with an internal combustion engine 20 according to the present invention; [0014]FIG. 2 is a plan view of the small planing boat 1; [0015]FIG. 3 is a cross-sectional rear view of the small planing boat 1; [0016]FIG. 4 is a longitudinal cross-sectional view of the internal combustion engine 20 as seen from the left side; and [0017]FIG. 5 is a transversal cross-sectional view of the internal combustion engine 20 as seen from the front. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0018]FIG. 1 is a side view of a small planing boat 1 equipped with an internal combustion engine 20 according to the present invention. FIG. 2 is a plan view of the small planing boat 1. FIG. 3 is a cross-sectional rear view of the small planing boat 1. The small planing boat 1 is a small saddle-ride type boat. The driver drives the boat straddling a seat 3 on a boat body 2 and gripping a steering handlebar 4 attached with a throttle lever. The boat body 2 is a floating structure which includes a hull 5 and a deck 6 joined together forming an internal space. The internal combustion engine 20 is mounted on the hull 5 inside the space. A jet propulsion pump 7 which is a propulsion means driven by the internal combustion engine 20 is disposed at a rear of the hull 5. As shown in FIG. 1, the jet propulsion pump 7 includes a flow passage leading from a water intake opening 8 formed in the bottom of the boat to a nozzle 9 which is open at the rear end of the boat body 2 and an impeller disposed in the flow passage. The shaft of the impeller is linked to the output shaft of the internal combustion engine 20. The drive rotation speed of the internal combustion engine 20 is controlled by turning the throttle lever attached to the steering handlebar. A nozzle 9 is linked to the handlebar by an operating wire (not shown). Operating the handlebar turns the nozzle 9 for steering so that a track is changed. A stowage space 10 is provided in a front portion of the boat body. A fuel tank 11 is positioned in a longitudinal middle portion of the bottom of the boat body. [0019]FIG. 4 is a longitudinal cross-sectional view of the internal combustion engine 20 as seen from the left side with respect to the forward direction of the boat. In FIG. 4, the arrow F points in the forward direction. FIG. 5 is a transversal cross-sectional view of the internal combustion engine 20 as seen from the front of the boat. In FIG. 5, "V" denotes the vertical plane, passing through the axis of a crankshaft 21, of the boat body 2, "C" the cylinder axis of the internal combustion engine 20, "H" a horizontal plane of the boat body 2, "D" the parting plane (joining plane) between a crankcase 22 and a cylinder block 23 of the internal combustion engine 20, and "HC" the center plane of boat body. Continue reading... Full patent description for Mounting structure for internal combustion engine on small planing boat Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Mounting structure for internal combustion engine on small planing boat patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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