37results about How to "Improve exhaust quality" patented technology

The invention relates to a method of operating an internal combustion engine operated on gasoline type fuels, more specifically on gasoline, wherein ignition of the fuel-air mixture is initiated spontaneously in at least one operational range of the engine, preferably in the part load range, and wherein a stratified charge is produced in the combustion chamber, preferably in the higher load range. In order to achieve in the simplest possible manner high exhaust quality for an internal combustion engine operated on fuel with poor ignition characteristics in the range of higher mean pressures as well there is provided that combustion is initiated by spontaneous ignition of the fuel in the full load range as well and that preferably the in-cylinder charge temperature is controlled throughout the load range by way of internal exhaust gas recirculation and that, in the full load range, the start of fuel injection occurs after top dead center.

An engine system may include a thermostat casing connected to a first, second, third, and fourth flow channels, a valve guide in which a main valve that opens and closes the first flow channel is formed at one side, a closing valve that opens and closes the second flow channel is formed at the other side, and a bypass valve is formed adjacent to the closing valve, an elastic member that elastically supports the valve guide to enable the main valve to block the first flow channel and the closing valve to block the second flow channel, a driver that moves the valve guide so that the main valve opens the first flow channel and the closing valve opens the second flow channel according to a temperature of a coolant, and a control unit that controls the temperature and a flow of the coolant by controlling the driver.

An idle stop condition determination method of an engine includes: calculating and storing a fuel saving estimation amount in idle stop of an engine on the basis of traveling information; calculating the amount of fuel consumption in restarting for restarting, when an idle stop condition of the engine is satisfied; comparing the magnitudes of the fuel saving estimation amount with the amount of fuel consumption in restarting, and stopping the engine in accordance with the result of the comparing; and restarting the engine, when a restarting condition of the engine is satisfied.

An internal combustion engine, especially of a two-stroke engine in a portable handheld work apparatus, includes an outlet (27) for the exhaust gases which is fluidly connected with at least one inlet opening (13, 14) in an exhaust-gas muffler (1). At least one resonance pipe (6, 7) is mounted in flow direction between the outlet (27) from the engine (20) and the inlet opening (3, 5) into the exhaust-gas muffler (1) in order to obtain a good noise attenuating result and simultaneously make possible an advantageous, space-saving mounting of the engine (20).

The invention relates to an energy-saving lamp manufacturing machine, in particular to a dual exhaust rod mercury gun. The prior single exhaust rod mercury gun has a poor vacuum result and can not meet production requirements. The dual exhaust rod mercury gun is provided with two butt glass rods and has a better vacuum result; the dual exhaust rod mercury gun comprises a gun body with an inner cavity; an exhaust pipe communicated with the inner cavity is arranged on one side of the gun body; a mercury dropping seat consists of a sealing cap, a sealing element, a seal ring, an upper pressure cap, a seat cover and a magnetic conductive inner core are arranged at the upper end of the inner cavity; a seal fitting connected with the lamp glass rods is arranged at the lower end of the inner cavity of the gun body; the seal fitting comprises a mercury receiving bucket, a gasket and a hold down part axially connected in series from up to down; an external thread is arranged at the bottom of the gun body and screwed with a lower pressure cap upward supporting the hold down part; through holes communicated with the inner cavity of the gun body pass through the gasket and the upper off axis position of the hold down part; an adjustment blockage is arranged in the through hole on the hold down part; and an axial exhaust through hole is formed on the adjustment blockage. The dual exhaust rod mercury gun has the advantages of good vacuum result, and helps accelerate production speed and raise production capacity.

The method relates to an electronically controlled system of a motorcycle, in particular to an ignition control method of the electronically controlled system of the motorcycle. The method comprises the following steps: S1, storing calibration data in a memory of ECU; S2, acquiring position signals and status data of a piston by the ECU, after the operation of a motor, calculating data for a basic ignition angle by ECU according to the operating position of the piston; S3, comparing the calibration data of step S1 with the status data of step S2 by the ECU, and obtaining the revised data for the basic ignition angle; S4, overlapping the data of the basic ignition angle calculated in the step S1 and the revised data for the basic ignition angle calculated in step S3 by the ECU to obtain data of a preignition angle; and S5, transmitting the obtained data of the preignition angle calculated in step S4 to an ignition coil by the ECU and controlling the ignition of the ignition coil by the ECU. The method well controls the ignition process, allows an engine to ignite at the best moment and causes the mixed air in the cylinder to fully burn, therby reaching effects of diminishing the oil consumption and improving the quality of tail gas.

The invention discloses an exhaust machine tail pipe pulling mechanism for processing light bulbs of road motor vehicles. The screw is pressed tightly, and the left end of the cylinder bracket is processed with inner holes in the horizontal and vertical directions. The inner hole of the support is installed on the rotating shaft. The upper and lower ends of the inner hole of the support are equipped with bearing bushes. The pin shaft is installed in the guide groove and penetrates into the radial inner hole of the rotating shaft. Screws are installed on the boss of the support, the bracket is installed on the shaft, and the nut is installed at the lower end of the rotating shaft and rests on the lower end surface of the bracket. The liquid shaft is installed in the hole of the support sleeve and connected with the connecting sleeve through a screw and a nut, and the threaded hole at the center of the bottom of the connecting sleeve is sealed with a plug. The invention can reduce the workload of operators and create conditions for improving the productivity of equipment.

An engine system for controlling flow of exhaust gas may include an intake line to receive external air, an engine including a combustion chamber to combust the external air and a fuel supplied through the intake line, to generate driving torque, an exhaust line to exhaust the exhaust gas combusted in the combustion chamber of the engine, a turbocharger including a turbine operated according to exhaust gas flowing through the exhaust line and a compressor to compress the external air flowing through the intake line, a catalyst device to reduce a harmful component included in the exhaust gas passing through the turbine of the turbocharger, a bypass line branched from the exhaust line between the combustion chamber and the turbine and converged in the intake line between the compressor and the combustion chamber, and a bypass valve disposed in the bypass line to selectively open / close the bypass line.

A method and system for controlling an exhaust gas flow in an engine system are provided. The method includes detecting operating conditions of an engine and operating a valve that is disposed on a line bypassing a catalyst unit based on the operating conditions such that exhaust gas bypasses the catalyst unit. The operating conditions include a vehicle speed, an engine rotation speed, a fuel injection amount, an accelerator pedal signal, a coolant temperature, or a lambda value of exhaust gas.