Ford Motor Company Limited

Robert A Marshall

Timothy James Bowman

Trevor W Biddulph

The invention relates to a method of assembling two parts of which one part is a sub-assembly formed of a plurality of relatively movable components. The method comprises the steps of holding the components of the sub-assembly in their desired relative positions for assembly, cooling the sub-assembly sufficiently to prevent relative movement between the components of the sub-assembly, and offering the sub-assembly to the other part while the components of the sub-assembly are locked against one another. It is preferred to coat the sub-assembly prior to cooling with a liquid, the cooling being sufficient to freeze the liquid to cause locking of the components.

Method of assembling components

An internal combustion engine has intake and exhaust ducts, including an exhaust duct portion formed as an integral part of the engine along with the engine coolant jacket and passages, the exhaust duct portion being located in good thermal contact with the engine coolant flow passages, and flow diverting valves in the exhaust duct portion to direct exhaust gases to flow through the exhaust duct portion when the engine is cold in order to accelerate warm-up, the valves causing the duct to be bypassed under normal operating conditions.

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Ilford, United Kingdom

Robert A Marshall