Provided is a transmission which is capable of outputting required power irrespective of the direction of rotation of an electric motor, and furthermore is capable of recovering energy with efficiency. A transmission device (3) for transmitting power comin...

An air conditioning system for automobile having a heater core capable of heating the interior in good efficiency is to be provided. Such a heater core is supplied with the coolant having bubbles removed, and thereby the efficiency of heat exchange is enha...

In an intake manifold 3 having a plurality of branch tubes 4, 4 arranged over the top surface of a cylinder head 1 in a state where a flange 7 provided at downstream-side ends of the branch tubes 4, 4 is fixed to a lateral surface of the cylinder head 1, a...

A cylinder block structure with a small number of ribs is provided which can favorably prevent the deformation of a crankshaft bearing portion and the like. In a cylinder block 1 having bolt holes 3 formed on the upper surface for connecting a cylinder hea...

A cooling water passage structure of internal combustion engines is provided which can contribute to a scale-down of the external form of the engine and also can prevent deformation of the cylinder bores. The cooling water passage structure comprises a wat...

A cylinder head is provided which can surely return the oil within the sub-cam chamber provided outside the rear end wall into the inside of the cylinder head. In the cylinder head, the front and the rear end wall are formed in parallel; the extension of t...

An air-intake manifold includes a plurality of air-intake pipes connecting between a collector and an air-intake pipe mount. Each air-intake pipe 3 is bent to have a predetermined shape. Each air-intake pipe 3 is fabricated by bending a substantially strai...