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| Number | Title | Issue Date |
| 7047942 | Piping structure of fuel injection pipes for engine Cylinder heads (100a to 100f are respectively provided with fuel injectors (101a to 101f). Each of the fuel injectors (101a to 101f) is connected to each of joints (105a | 05/23/2006 |
| 6491031 | Vacuum breather assembly A baffle assembly for connection to the intake of an exhaust gas recirculation valve. The baffle assembly has a central intake chamber which is protected from the inflow of contaminants. The baffle assembly provides drain paths for any water or contaminan... | 12/10/2002 |
| 5640848 | Multi-cylinder internal combustion engine A multi-cylinder internal combustion engine with a vacuum and an exhaust gas system is provided with a feed device for secondary air into the exhaust gas system and with an external exhaust gas return. The lines required for this are integrated into the h... | 06/24/1997 |
| 5467756 | Device for controlling an amount of exhaust gas returned to an aspirating line A device for controlling the amounts of returned exhaust gas, wherein an exhaust gas return valve in an exhaust gas return line is supplied with pressure from a pressure source via a control valve in such a way that the return of exhaust gas is stopped du... | 11/21/1995 |
| 4466415 | EGR Control systems for diesel engines An automotive vehicle having a diesel engine, a throttle system actuable to control the engine speed, a vacuum pump driven by the engine and forming, at least in part, a vacuum pressure source, and an EGR system. The EGR system comprises an EGR valve and ... | 08/21/1984 |
| 4440139 | Vacuum control valve A vacuum modulating chamber of a vacuum control valve is communicated with a diaphragm chamber of a EGR valve for controlling an amount of exhaust gas to be recirculated into combustion chambers of an engine, so that a modulated negative pressure is appli... | 04/03/1984 |
| 4428353 | RPM Bias regulator valve The RPM bias valve combines a first fluid signal which varies inversely with the throttle position or with other engine conditions and a second fluid signal which varies with engine speed to produce a modulated output signal which varies as a function of ... | 01/31/1984 |
| 4416243 | Vacuum control valve A vacuum modulating chamber of a vacuum control valve is communicated with a diaphragm chamber of a EGR valve for controlling an amount of exhaust gas to be recirculated into combustion chambers of an engine, so that a modulated negative pressure is appli... | 11/22/1983 |
| 4387693 | Exhaust gas recirculation control An exhaust gas recirculation control assembly senses a throttle position related vacuum signal, an engine speed related pressure, and atmospheric pressure to create a subatmospheric control pressure suitable for actuating a diaphragm operated exhaust gas ... | 06/14/1983 |
| 4359033 | Exhaust gas recycling in diesel engines The characteristics of a diesel engine exhaust gas recycling system are improved by reducing the percentage of the recycled exhaust gas in the low and high speed ranges of the engine. This is accomplished by the use of a conversion valve which decreases t... | 11/16/1982 |
| 4300515 | Apparatus for actuating an adjustment device acting upon a control apparatus for exhaust recirculation in internal combustion engines An apparatus is proposed which serves the purpose of load-dependent actuation of an adjustment device, wherein the cross section and/or the pressure drop of an exhaust recirculation line in an internal combustion engine can be varied in accordance with lo... | 11/17/1981 |
| 4295456 | Exhaust-gas-recirculation system for use in diesel engines An exhaust-gas-recirculation system for use in diesel engines, having a valve member adapted to control the flow rate of the exhaust gas recirculated from the exhaust pipe to the intake pipe of the diesel engine. The exhaust-gas-recirculation system has a... | 10/20/1981 |
| 4206730 | Method for recycling exhaust gas from an internal combustion engine Method for recycling exhaust gas from a fuel injection engine, wherein the speed of the engine, as well as the rate of the fuel injection to the engine combustion chambers, are the determining factors in regulating the flow rate of exhaust gas to the engi... | 06/10/1980 |
| 4192267 | Exhaust gas recycling in an internal combustion engine An exhaust gas recycling circuit for use in a fuel injection engine wherein the speed of the engine, as well as the rate of the fuel injection to the engine combustion chambers, are the determining factors in regulating the flow rate of exhaust gas to the... | 03/11/1980 |
