Ford CHT engine
From Wikipedia, the free encyclopedia
The letters CHT denote a particular type of 4-cylinder internal combustion engine produced by the Ford Motor Company in Brazil during the 1980s. It is a completely different engine from the CVH engine and should not be mistaken with it.
The CHT (Compound High Turbulence) engine was introduced by Ford in 1984 in the Mark 3 version of the Ford Escort, the first of the series to be released in Brazil. It was later used in the Ford Del Rey, the Ford Verona (a Brazilian Ford Orion), as well as the Volkswagen Gol.
The engine itself is an evolution of the very efficient Renault Ventoux engine, which Ford inherited upon buying the Brazilian Willys/Renault plant in the late 1960s. It has 8 overhead valves OHV, of the rotating valve design.
It was very robust and economic with modest performance compared to the competing Volkswagen AP engine.
It was unusual in being available in an alcohol-fuelled version, which generated at least 10% more power than the petrol model, with about 25% increase on the fuel consumption. It had no problems at all for cold starts and high fuel consumption unlike the cars of major competitor General Motors had at that time.
Three models were available:
- 1.6 petrol (65 hp)
- 1.6 alcohol (74 hp)
- 1.6 XR alcohol (83hp) for the Escort XR3
In 1987, with the release of the Mark 4 Ford Escort, this engine benefited from some revisions, resulting in the CHT E-Max (maximised economy) version. All the new models featured better torque.
In 1992, a smaller version was released for the Escort and the Gol:
- 1.0 petrol (50 hp)
During the Autolatina period (1990-1996) VW used this engine, naming it AE-1600 and AE-1000, but it is basically the same engine. AE = Alta Economia (High Economy).
In 1996 and 1997 the CHT was gradually replaced by the Volkswagen AP and the new Volkswagen AT, in the VW cars, or the newer Zetec 16-valve unit and the inferior Endura-E engine, in the Ford cars.
