An exhaust gas heat recovery (EGHR) system for a vehicle is configured to selectively distribute a fluid heated by engine exhaust through a coolant path for heating an engine, a transmission and a battery during cold operating conditions until a desired operating temperature is reached. In response to receiving one or more heating requests from the engine, transmission and/or battery, a controller distributes the fluid through the coolant path according to a priority level for each heating request received, wherein the priority level for each heating request may be based on current vehicle operating conditions and/or driver demand.

A fuel filter element, which may be selectively arranged in a filter housing and may separate in the filter housing an untreated space communicating with an inlet and a return line of the housing from a treated space communicating with an outlet of the housing, may include at least one end disk, and at least one closure element, which in an operationally ready state of the fuel filter may close off the return line. The closure element may protrude eccentrically axially away from the at least one end disk. The closure element may have a seal on a surrounding surface and that, in the operationally ready state, may be in contact with a surface of the return line. In the operationally ready state, a portion of the closure element may be located in a filter chamber of the filter housing and another portion of the closure element may be located in the return line.

A fuel filter for a fuel supply system of an internal combustion engine may include a filter housing, which may have an untreated-side inlet, a treated-side outlet, and an untreated-side return line. The fuel filter may also include a filter element arranged in the filter housing, and a closure element, which in an operationally ready state of the fuel filter may close off the return line. The fuel filter may include an untreated space and a treated space, and may separate in the filter housing the untreated space communicating with an inlet and the return line from the treated space communicating with the outlet. The fuel filter may further include a pressure sensor configured to measure a pressure build-up in the treated space, wherein the fuel filter may be configured to enable the pressure build-up to reach a predetermined threshold at which the engine may be started.

An engine start-stop control method and device for a hybrid electric vehicle, and a hybrid electric vehicle belong to the technical field of vehicles. The method includes: obtaining a target parameter or a target signal, which is engine start-stop related, of the hybrid electric vehicle; determining, according to the target parameter or target signal, whether an engine start-stop related event occurs; if so, determining a level of the engine start-stop related event; and performing engine start-stop control according to the engine start-stop related event and the level thereof; wherein the engine start-stop related event includes at least one of the following: an energy management related start-stop event, a driving behavior related start-stop event, an engine state related start-stop event, an external controller request start-stop event, and other condition related start-stop events. The operating efficiency of the vehicle and the user experience are improved.

In response to a restarting request generated during a stopping period, in which fuel injection is stopped to automatically stop engine operation, either starter starting or combustion starting is selected. In the starter starting, the engine is restarted using a starter motor. In the combustion starting, the engine is restarted through fuel injection and ignition without using the starter motor. If the rotational resistance acting on the crankshaft is determined to be of such a magnitude that the combustion starting is impossible, the starter starting is carried out in response to the restarting request generated during the stopping period.

An electric motor for starting internal combustion engines and a relative starting control system of such engine comprising said electric motor of the type with permanent magnets allows a more effective and simpler management of the internal combustion engine thereto the electric motor is connected, wherein a monitoring unit of the electric motor (EMU) and a monitoring unit of the internal combustion engine (ECU) are provided, wherein the electric motor comprises a direction sensor (18) providing a signal representing the rotation direction of the rotor (12) of the electric motor, which is connected to said monitoring unit of the internal combustion engine (ECU).

A warm-up system for an engine of a machine is provided. The machine has a primary alternator and an auxiliary alternator. The warm-up system includes at least one coolant heater configured to heat a coolant flowing through one or more coolant passages of the engine. The coolant heater is electrically powered by the auxiliary alternator of the machine when the engine runs at low load or idle conditions. The engine warm-up system further includes a thermostatic device operably coupled to the coolant heater and configured to control the operation of the coolant heater based on a temperature of the coolant flowing through the coolant passages.

An engine control apparatus is used with a system equipped with an engine and an engine starter. The engine starter includes an electrical motor, a pinion gear driven by the electrical motor, and a pinion shifter which thrusts the pinion to a location where the pinion is engageable with a ring gear coupled to the engine. The engine control apparatus determines a pulsation parameter which represents a pulsating component of speed of the engine or a value correlating with the pulsating component. The engine control apparatus works to thrust the pinion through the pinion shifter to establish engagement with the ring gear and then rotate the electrical motor to crank the engine. The engine control apparatus alters a cranking terminating time as a function of the pulsation parameter. This minimizes mechanical noise occurring between the pinion gear and the ring gear at the start of the engine.

A vehicle (100) comprising: an engine (102); an engine driven electrical power generator (104) configured to be driven by the engine (102); a fuel cell (110); one or more vehicle subsystems (106); a memory (118) storing a plurality of different power sharing templates (126), each power sharing template (126) specifying different power supply sharing information; and a controller (116, 22) configured to: select a power sharing template (126) from the plurality of power sharing templates (126); and control the engine driven electrical power generator (104) and the fuel cell (110) to supply electrical power to the one or more vehicle subsystems (106) such that said supply of electrical power is proportioned between the engine driven electrical power generator (104) and the fuel cell (110) in accordance with the power supply sharing information specified in the selected power sharing template (126).

In an engine starting system, a first controller activates, in response to a driver's starting request, a first starting device to rotate the rotating shaft of an engine. A second controller is communicably connected to the first controller. The second controller recognizes rotation of the rotor of a second starting device resulting from an activation of the first starting device. The second controller starts a power running operation of the second starting device based on the recognition of the rotation of the rotor. The first controller determines whether the power running operation of the second starting device has been started. The first controller deactivates, when it is determined that the power running operation has been started, the first starting device before a rotational angular position of the rotating shaft of the engine arrives at a compression top dead center of the engine.