摘要:
A fuel injection system which includes an injection valve for a self-igniting internal combustion engine with direct fuel injection, in particular for liquefied gas fuels, and which is configured as a pintle-type nozzle opening against the force of at least one spring, has the opening force of its fuel needle directly provided by the magnetic force of a solenoid so as to create simplified rate shaping. The magnetic force increases quadratically with the needle lift vis-a-vis the force of the spring increasing linearly with the needle lift, resulting in an opening velocity of the needle increasing approximately quadratically, at least in certain regions, thus permitting small pintle lifts, and the needle has a maximum needle lift of smaller than 1 mm, i.e., preferably smaller than 0.5 mm.
摘要:
The invention relates to a method for operating a hybrid vehicle, in particular a series-produced hybrid vehicle, comprising at least one electric motor and at least one internal combustion engine, wherein the internal combustion engine is operated in at least one first operating range (B, D) of the vehicle, in particular in a stationary manner, and is deactivated in at least one second operating range (A, C) of the vehicle. In order to enable a basic constant sound without sudden changes, a basic sound (SB) which corresponds to the operating sound (SC) of the internal combustion engine is generated during the second operating range (A, C).
摘要:
The invention relates to an invention combustion engine comprising a cylinder head (1) with at least one inlet port (4) and at least one injection device (6) per cylinder (2), which extends into the combustion chamber. In order to reduce wear of the injection device while preventing depositions in the region of the injector pocket, the top wall (22) of the combustion chamber is provided with an injector pocket (7) in the area of the mouth (6a) of the injection device (6). Preferably, at least one scavenging duct arrangement (10) extends into the injector pocket (7).
摘要:
The invention relates to an invention combustion engine comprising a cylinder head (1) with at least one inlet port (4) and at least one injection device (6) per cylinder (2), which extends into the combustion chamber. In order to reduce wear of the injection device while preventing depositions in the region of the injector pocket, the top wall (22) of the combustion chamber is provided with an injector pocket (7) in the area of the mouth (6a) of the injection device (6). Preferably, at least one scavenging duct arrangement (10) extends into the injector pocket (7).
摘要:
Fuel, especially ethanol, is injected in an internal combustion engine via at least one injection device into a combustion chamber, with the injection pressure of the fuel being temporarily increased during the starting phase of the internal combustion engine. The injected fuel quantity is divided among several injections in the intake phase during the start of the internal combustion engine, with at least two injections being performed during the intake phase and with the multiple injections being performed with high injection pressure already in the dragging phase for the first injections. The starting behavior can be improved when the quantity of fuel of the last fuel injection is lower than the quantity of each preceding fuel injection.
摘要:
The invention relates to a method for operating an internal combustion engine (1) with two-stage turbocharging by a low-pressure exhaust gas turbine (6) and a high-pressure exhaust gas turbine (7), the low-pressure exhaust gas turbine (6) being positioned downstream of the high-pressure exhaust gas turbine (7) in the exhaust system (3) of the internal combustion engine (1), and the high-pressure exhaust gas turbine (7) being provided with a bypass line (11) with a control valve (12). In order to achieve quick response of the internal combustion engine (1) in transient operation, it is provided that continuously or periodically at certain intervals preferably an electronic control unit will check whether a steady-state or a transient operating state of the internal combustion engine (1) is prevailing, and that the control valve (12) is controlled in accordance with at least one steady-state characteristic map (32, 33) in the steady-state case and in accordance with at least one transient characteristic map (31) or a transient function in the transient case.
摘要:
An internal combustion engine (1) having at least two cylinders (4) or at least two groups (2, 3) of cylinders (4), of which at least one is electronically deactivatable, has at least one inlet strand (5, 6) and at least one outlet strand (7, 8). In order to improve the quality of the operating noise in the interior of a passenger cell, at least one inlet strand (5, 6) of at least one deactivated cylinder (4) can be acoustically connected via at least one sound conducting apparatus (21, 22) to an inner chamber (20) of a vehicle (19).
摘要:
A method for operating a hybrid drive in a vehicle with an internal combustion engine and at least one electric machine connected thereto which is in connection with at least one energy storage device including operating the internal combustion engine is operated in overload mode in at least one preferably exceptional operating situation of the hybrid drive in order to avoid power losses at low loading state of the energy storage device.
摘要:
The invention relates to a method for operating an internal combustion engine (1) with two-stage turbocharging by a low-pressure exhaust gas turbine (6) and a high-pressure exhaust gas turbine (7), the low-pressure exhaust gas turbine (6) being positioned downstream of the high-pressure exhaust gas turbine (7) in the exhaust system (3) of the internal combustion engine (1), and the high-pressure exhaust gas turbine (7) being provided with a bypass line (11) with a control valve (12). In order to achieve quick response of the internal combustion engine (1) in transient operation, it is provided that continuously or periodically at certain intervals preferably an electronic control unit will check whether a steady-state or a transient operating state of the internal combustion engine (1) is prevailing, and that the control valve (12) is controlled in accordance with at least one steady-state characteristic map (32, 33) in the steady-state case and in accordance with at least one transient characteristic map (31) or a transient function in the transient case.
摘要:
The invention relates to a method for recognizing and avoiding premature combustion events. In order to avoid damage to the engine, the invention provides the following steps: providing at least one sensor and/or an electronic evaluation circuit for recognizing premature combustion; direct recognition of premature combustion; performing at least one measure for avoiding premature combustion when premature combustion is recognized.