owners manual Volvo 740

owners manual Volvo 740 - year of production: 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 - Volvo 740 GL GLE Turbo owners manual EN

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text version of content this owner's manual page from owners manual to the vehicle Volvo 740, year of production 1984 - 1993:

1986 Volvo 740 GL, GLE, Turbo LH Jetronic 2.2 fuel system The B230F engine (740 GL, GLE) and the B230F-Turbo engine (740 TUrbo) both have the same type of fuel-injection system. The LH Jetronic 2.2 fuel injection system is all-electronic and is microprocessor-controlled. It can continually compensate for variations in engine load, speed and temperature to give the best economy and power. The most unique feature of the system is an air mass meter, that measures the mass of the inducted air instead of the volume. In this way the system can make instantaneous adjustments for changes in air temperature or density, thus always assuring the best economy with the lowest possible exhaust emission. Lambda-sond (oxygen sensor) system This is an emission control system designed to reduce emissions and improve fuel economy. An oxygen sensor monitors the composition of the exhaust gases leaving the engine. The exhaust gas analysis is fed into an electronic unit which continually influences the a frequency valve. This adjusts the air-fuel ratio to provide optimum conditions for combustion and efficient reduction of the three major pollutants (hydrocarbons, carbon monoxide and nitrous gases) by a 3-way catalytic converter. pg. 101 Servicing Catalytic converter This is a supplementary device in the exhaust system, designed to clean exhaust gases. This device is mainly a container with a ceramic material insert, designed to let the exhaust gases pass through channels in the insert. The channel walls are covered by a thin layer of platina-palladium. These metals act as catalysts, permitting chemical reaction to occur without actually taking part in it. The emission (CO, HC, NOX) content will increase if the catalytic converter is damaged. Lambda-sond equipped vehicles use Catalytic Converters containing platinum and rhodium. file:///K|/ownersdocs/1986/1986_740/86740_07.htm (8 of 15)12/30/2006 7:51:36 AM

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year of production from: 1984

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