Exhaust gas analyzer for diesel engines
First Claim
1. An exhaust gas analyzer apparatus having a conduit means including an inlet for receiving exhaust gas from an internal combustion engine and an outlet, said apparatus comprising:
- (a) a gas analyzer device connected to the conduit means at the outlet thereof;
(b) electrostatic filter means interposed in said conduit means between the inlet and the gas analyzer device to receive said gas from said conduit means and to filter said exhaust gas for delivery to said gas analyzer device, said electrostatic filter means comprising ionization electrode means, first and second collector electrode means, an electrical power source and means connecting said electrical power source to said ionization electrode means and to at least one of said first and second collector electrode means;
(c) a source of pressurized fluid, and(d) valve means interposed in said conduit means between said electrostatic filter means and said analyzer device and coupled also to said source of pressurized fluid for selectively controlling flow of said pressurized fluid to said electrostatic filter means and interrupting flow of exhaust gas to said gas analyzing device.
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Accused Products
Abstract
An exhaust gas analyzer apparatus having a particle filter between its input and the analyzer. The separator includes a heat exchanger coil coupled to a condenser, an electrostatic separator coupled to the condenser, a source of fluid pressure and a filter medium. A valve is provided between the electrostatic separator and the source of fluid pressure so that the electrostatic separator may be scrubbed periodically. The filter medium is interposed between the valve and the analyzer. A source of power is provided. The electrostatic separator includes an ionizing device for charging the gas exhaust particles and two alternating sets of collector electrode plates having differing electric potential collecting the charged particles to enable generally particle free gas to be discharged to the analyzer. One set of electrode plates are connected to the ionizing device and the other set is grounded. The filter medium serves as a secondary filter so as to assure particle free dry gas is delivered to the analyzer.
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Citations
12 Claims
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1. An exhaust gas analyzer apparatus having a conduit means including an inlet for receiving exhaust gas from an internal combustion engine and an outlet, said apparatus comprising:
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(a) a gas analyzer device connected to the conduit means at the outlet thereof; (b) electrostatic filter means interposed in said conduit means between the inlet and the gas analyzer device to receive said gas from said conduit means and to filter said exhaust gas for delivery to said gas analyzer device, said electrostatic filter means comprising ionization electrode means, first and second collector electrode means, an electrical power source and means connecting said electrical power source to said ionization electrode means and to at least one of said first and second collector electrode means; (c) a source of pressurized fluid, and (d) valve means interposed in said conduit means between said electrostatic filter means and said analyzer device and coupled also to said source of pressurized fluid for selectively controlling flow of said pressurized fluid to said electrostatic filter means and interrupting flow of exhaust gas to said gas analyzing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification