Slide 7 The Toyota Hybrid System - The Engine - 1  

• Although a hybrid power train could use a Diesel engine, Toyota and Honda have both chosen gasoline engines.

• They are more acceptable in Japan and the U.S.A., where diesel engines are little used in cars (other than taxis).

• They are better for meeting tight emission requirements – especially for NOx and particulates.

• They are easier to start, after stopping when stationary, and during on-off cycling of the engine.

• The cylinder pressures are lower, so the engines are lighter, with less internal friction.

• They are much quieter, so that on-off cycling of the engine is much less obtrusive.

• They can be made for less - especially the fuel system, since it operates at far lower pressures.

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