Honda Giken Kogyo Kabushiki Kaisha

Yoshiaki Hidaka

Tadashi Tsuchiyama

Masayuki Tamura

Junichi Araki

Takashi Kamezaki

Akihisa Senga

Hiroshi Shinagawa

Tetsuo Tahara

A cylinder block for an internal combustion engine includes the skeleton frame formed of metal and a waterjacket surrounding the frame formed of a heat resistant plastic. The engine includes a cylinder head and the cylinder bearing supports and a sleeve forming a cylinder bore. The engine block, cylinder head and main bearings are fixed together with bolts which pass through portions of the framework parallel to the metal sleeve. The engine also includes an air intake pipe with the portion of the pipe adjacent the waterjacket integrally formed with the waterjacket.

Cylinder block for internal combustion engine

The crankshaft of an internal combustion engine is supported in a split bearing assembly near one end of the crankshaft, with the lower half of the bearing assembly formed in a bearing holder secured to the engine block. An arcuate flange projects axially towards that end of the crankshaft. The flange underlies a crankshaft pulley which drives a timing belt. The arcuate surface of the flange is struck from a center offset from the crankshaft axis in order to provide clearance for the timing belt. The offset construction also improves the joint seal between the oil pan and the engine block.

Crankshaft bearing device for internal combustion engine

A pump for lubricating oil is mounted on the outer face of the end wall of an internal combustion engine. An oil filter is mounted on a side wall of the engine parallel to the crankshaft, and a substantially straight sub-gallery in the side wall connects the oil pump to the oil filter. A substantially main gallery receives lubricating oil from the oil filter and delivers it to branched oil supply passages to lubricate parts of the engine.

Lubricant passage system for internal combustion engines

An improved intake manifold structure for internal combustion engines includes a distribution chamber having an upper sub-chamber leading to a carburetor and a lower sub-chamber communicating with the upper sub-chamber through a communication hole. A plurality of branch passages extend from the lower sub-chamber to a plurality of combustion chambers. An air-fuel mixture fed from the carburetor to the distribution chamber is expanded successively in two steps to promote its atomization as it passes through the two sub-chambers, thus improving uniform distribution of the mixture to the respective branch passages. Engine exhaust gas is returned to the upper sub-chamber to further promote the atomization of the mixture.

Intake manifold structure for internal combustion engines

A lubricating system of an internal combustion engine is equipped with intake and exhaust valves and a valve operating mechanism having rotating portions and reciprocating portions. The rotating portions are communicated with an oil pump via a first oil path and the reciprocating portions are also communicated with the oil pump via a second oil path. The rotating portions have a cam shaft in operative connection with a crank shaft. The reciprocating portions include a rocker follower pivoted to a follower shaft and engaging the cam shaft, a rocker arm pivoted to a rocker shaft and operatively connected to the intake or exhaust valve, and a push rod connecting the rocker follower and rocker arm. A series feed oil path is defined in the follower shaft, rocker follower, push rod, rocker arm and rocker shaft so as to pass through their mutual contact portions, and is communicated with the oil pump via the second oil path. Accordingly, in this construction the mutual contact portions between the rotating portions and the reciprocating portions can effectively be lubricated by one lubricating system.

Lubricating device for internal combustion engine

A V-type internal combustion engine has a timing gear mechanism positioned in front of the cylinder block for driving the camshaft from the crankshaft. A coolant pump is secured to the cylinder block laterally offset from the crankshaft and adjacent one bank of cylinders. A first discharge passage leads from the coolant pump to the adjacent bank of cylinders and the second discharge passage is formed on a cover for the timing gear mechanism for supplying coolant to the remote bank of cylinders.

V-Type internal combustion engine

The present invention discloses an apparatus for cooling engine oil characterized in that there is provided an oil reservoir in communication with a first oil pump of an internal combustion engine. Further, an oil passage connects the pump to the oil reservoir, and the oil passage is provided with a by-pass passage in parallel with the oil passage. In the by-pass passage there is disposed an oil cooler on the upstream side and a second oil pump on the downstream side, the second pump also in communication with said oil reservoir.

Apparatus for cooling engine oil

A shifting mechanism for power transmission device in an automotive vehicles, wherein, when gear shifting of the fifth or third speed gear and the reverse gear is to be done by reciprocating movement of a fifth speed fork shaft, an engaging or control pin of the shift fork shaft is permitted to move at the time of the fifth speed gear shifting by forming an L-shaped control slot in a shift lever, thereby avoiding undesirable influence on the shifting mechanism of a reverse idle gear.

Growing community of inventors

Saitama, Japan

Yoshiaki Hidaka