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Water-cooled engine, outboard motor equiped with water-cooled engine, and outboard motor

An engine and vertical technology, which is applied in the direction of engine cooling, engine components, outboard propulsion devices, etc., can solve the problems of long distances, reduce the number and cost of components, and reduce the number of cooling water temperature sensors.

Inactive Publication Date: 2004-05-19
HONDA MOTOR CO LTD
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Problems solved by technology

Moreover, when the temperature of the cooling water flowing in from the bottom inlet of the cylinder head water jacket is controlled by the thermostat at the upper outlet of the cylinder block water jacket (see image 3 ), has the same problem as above Figure 2b, that is, the distance from the inlet of the cylinder head water cooling jacket to the thermostat is longer

Method used

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  • Water-cooled engine, outboard motor equiped with water-cooled engine, and outboard motor
  • Water-cooled engine, outboard motor equiped with water-cooled engine, and outboard motor
  • Water-cooled engine, outboard motor equiped with water-cooled engine, and outboard motor

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Embodiment Construction

[0048] As shown in FIGS. 1 to 3, the outboard motor O is mounted on the hull so that it can perform steering motions around a steering shaft 96 in left and right directions, and can perform tilting motions around a tilting shaft 97 in a vertical direction. The in-line four-cylinder four-stroke water-cooled vertical engine E installed on the top of the outboard motor O includes: a cylinder block 11; a base (lower block) 12, which is connected to the front surface of the cylinder block 11; a crankshaft 13, which is Arranged in a substantially vertical direction and supported so that the journal 13a remains between the cylinder block 11 and the base 12; the crankcase 14 is connected to the front surface of the base 12; the cylinder head 15 is connected to the cylinder head 15 The rear surface of the cylinder block 11 is attached; and the end cover 16 is attached to the rear surface of the cylinder head 15 . Four cylinders 17 in the form of sleeves are cast around the cylinder blo...

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Abstract

A water-cooled vertical engine is provided with an exhaust guide cooling water jacket and an exhaust manifold cooling water jacket formed in an engine compartment exhaust passage, a cylinder block cooling water jacket formed in a cylinder block, and a cylinder head cooling water jacket formed in a cylinder head. A first cooling path for supplying cooling water from a cooling water pump to the cylinder block cooling water jacket via the exhaust guide cooling water jacket and the exhaust manifold cooling water jacket is substantially independent from a second cooling path for supplying cooling water from the cooling water pump to the cylinder head cooling water jacket. Thermostats are provided in the cylinder block cooling water jacket and the cylinder head cooling water jacket, respectively.

Description

technical field [0001] The invention relates to a water-cooled vertical engine, wherein the crankshaft is arranged substantially vertically, and water-cooling jackets are arranged in each cylinder block, cylinder head and exhaust passage device. The present invention also relates to an outboard motor provided with a water-cooled vertical motor, and furthermore, the present invention also relates to an outboard motor having a motor cooled by a cooling medium. Background technique [0002] For vertical engines for outboard motors, water-cooled engines are usually used. In this type of water-cooled engine, when the cylinder block and the cylinder head are equally cooled with cooling water, if the cylinder head that generates relatively large heat is cooled to an appropriate temperature, the cylinder block that generates relatively small heat will become supercooled . Japanese Patent Application Laid-Open No. 61-167111 discloses a cooling structure for an outboard motor, which...

Claims

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Application Information

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IPC IPC(8): F01P3/02B63H20/00F01P3/00F01P3/12F01P3/20F01P7/16
Inventor 田和宽基牛山英行黑田达也
Owner HONDA MOTOR CO LTD
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