88 results about "Port fuel injection" patented technology

A method for managing vapors generated by a first and second reservoir onboard a vehicle traveling on the road, the method comprising of inducting vapors from the first and second reservoirs during engine operation; and reducing flow of vapors from first the reservoir to second reservoir and from the second reservoir to the first reservoir.

The drive control of the invention sets a rotation speed Ni for in-cylinder injection according to an operation curve used in operation of an engine with fuel injection from only in-cylinder fuel injection valves and a rotation speed Np for port injection according to an operation curve used in operation of the engine with fuel injection from only port fuel injection valves (steps S150 and S160). The drive control subsequently sets a target rotation speed Ne* and a target torque Te* of the engine by distributing the rotation speed Ni for in-cylinder injection and the rotation speed Np for port injection by an allocation rate k of in-cylinder fuel injection to port fuel injection (step S170). The drive control then sets torque commands Tm1* and Tm2* of two motors and controls the engine and the two motors to drive the engine at a specific drive point defined by the target rotation speed Ne* and the target torque Te* and to ensure output of a torque demand Tr* to a ring gear shaft or a driveshaft (steps S180 through S220). This arrangement attains efficient and appropriate operation of the engine.

A method is described for an engine having a delivery system configured to deliver fuel and a fluid to an engine cylinder, said fluid containing at least some water. In one example, an engine operating parameter may be varied based on an amount of water in said fluid, where said amount is determined based on an operating condition.

A fuel injector for an internal combustion engine including an in-cylinder fuel injection valve and an intake port fuel injection valve. An ECU controls an electromagnetic valve to keep a fuel inlet of a high pressure pump closed during an intake port injection mode during which fuel is injected only from an intake port fuel injection valve. As a result, even if the plunger reciprocates in the high pressure pump, fuel does not flow between the high pressure pump and a low pressure fuel path. Thus, pressure pulsation that would be caused by the operation of the high pressure pump does not occur in low pressure fuel.

A method for managing vapors generated by a first and second reservoir onboard a vehicle traveling on the road, the method comprising of inducting vapors from the first and second reservoirs during engine operation; and reducing flow of vapors from first the reservoir to second reservoir and from the second reservoir to the first reservoir.

An engine ECU executes a program including the steps of: when the port fuel injection ratio is 100% (YES at S200), sensing the engine coolant temperature THW (S210); when the engine coolant temperature THW is higher than a threshold value (YES at S220), monitoring fuel pressure P in a high-pressure delivery pipe (S230); and when fuel pressure P rises by the received heat (YES at S240), identifying that there is no error at the high-pressure fuel system.

An internal combustion engine includes an engine control unit for setting a ratio of fuel injection quantity of both the injectors. The engine control unit includes a memory storing four sheets of ignition timing maps, with reference to which the maximum torque generation timing and knocking limit torque generation timing, at the direct injection injector (100%) and port fuel injection injector (100%), are calculated. The engine control unit further operates to calculate a correction amount from correction amount map, and calculates first interpolation value of the maximum torque generation timing at the above 100% operation time of both the injectors and second interpolation value of the knocking limit torque generation timing at the above 100% operation time of both the injectors. A value in which the correction amount is added to either one of the above first and second interpolation value on a delay angle side is calculated as ignition timing.

The present invention refers to a method of using lean fuel-air mixtures at all operating regimes of a spark ignition engine, which is provided with an intake port fuel injection system, wherein said method is characterized in that in order to achieve the efficient lean mixture combustion process, an HHO oxy-hydric gas direct injection should be at a minimum pressure of 10 bar, during compression stroke, after intake valve closing, so that the hydrogen / fuel mixture volumetric fractions value is within the range of about 15% to 25%.

On incompletion of port learning, an auto stop-permitting water temperature is set to a temperature which is higher than a temperature set on completion of the port learning and is higher than a port injection temperature as an upper limit temperature that enables an engine to be driven in a port injection drive mode. This arrangement increases the opportunity of continuing the operation of the engine with fuel injection from a port fuel injection valve without an auto stop, thus increasing the opportunity of the port learning.

A method for controlling an engine during a start is presented. In one example, the method includes direct starting an engine with a port fuel injector. The method can improve engine starting during some conditions.