Abstract: An air heater for heating intake air for an internal combustion engine is provided. The air heater may have a heating element with improved air flow redirection. The air heater may include a controller that is formed as an integral component with another component of an internal combustion engine such as an air intake manifold cover. The heater may include thermocouple circuitry for sensing the temperature of the heating element. Methods of calibrating the thermocouple circuitry are also provided. Methods of controlling the air heater while performing engine start are also provided.

Abstract: An air heater for heating intake air for an internal combustion engine is provided. The air heater may have a heating element with improved air flow redirection. The air heater may include a controller that is formed as an integral component with an other component of an internal combustion engine such as an air intake manifold cover. The heater may include thermocouple circuitry for sensing the temperature of the heating element. Methods of calibrating the thermocouple circuitry are also provided. Methods of controlling the air heater while performing engine start are also provided.

Abstract: A glow plug includes a heating rod (11), a plug body, a mounting device for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body, a load sensor which is interposed between the heating rod and the plug body, and an electrical link, called the sensor link (71), which includes at least one signal line (74). The sensor link includes an earth conductive layer (82) which is interposed radially between the electrical power supply link of the heating rod and each signal line, to form a screening.

Abstract: An air heater, method of assembling an air heater and a ceramic holder for an air heater are provided. The ceramic holder is formed from two parts that are operably mounted to the housing for securing a ceramic insulator to the housing.

Abstract: A sensor includes a piezoelectric detector (10) mounted in a support having electrically conductive walls forming a mechanical ground (MM), and an amplifier for processing the signal delivered by the piezoelectric detector, defining an electronic ground (ME) and at least a capacitive feedback loop (16). A voltage adder circuit (61) is inserted into the capacitive feedback loop in order to add an electrical voltage which varies as a function of the potential difference between the mechanical ground (MM) and the electronic ground (ME), so that the variations of this potential difference are continuously compensated for at the input (13) of the processing amplifier (12) receiving the signal delivered by the piezoelectric detector (10).

Abstract: A glow plug includes a heating rod (11), a plug body (13) having a receiving housing (14) of the heating rod, a mounting device (48) for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body and ensuring impermeability between the heating rod and the plug body, a load sensing sleeve (17) which extends around the proximal portion (50) of the peripheral metal tube (59, 61) of the heating rod in the proximal zone (51) of the receiving housing, directly adjoining axially the mounting device (48) axially on the proximal side.

Abstract: An air heater fuse for diesel engines for easier starting of a diesel engine inlet air needs to be warmed. In large diesel engines an electric heater is therefore installed into an inlet manifold due to protection in case of excessive electric current and warming of the housing. The fuse of the invention is characterised in that the fusible link (9) is fastened to the air heater by the fastening screw (5), wherein the fusible link (9) is arranged between the head of the fastening screw (5) and the housing (1) of the air heater, and the fusible link (9) is insulated from the shaft of the fastening screw (5) by the insulating spacer (12a) or another insulating material.

Abstract: Ignition system for reliable starting and maintaining regeneration process of Diesel particulate filer wherein the said ignition system is composed of a diesel particulate filter inside the exhaust pipe, fuel burner beside the exhaust pipe, ignition system for fuel burner, a tube for supplying the fuel, a tube for air intake, spark plug with a special arrangement of spark gap, battery as electric energy supply, an engine control unit and high voltage screened interconnection cable whereas the ignition system comprises spark plug (5) and glow plug (6) with the air gap (11) formed by central electrode (7) of spark plug (5) and glowing tip (8) of glow plug (6), grounded by fixing point (10), whereas spark is formed in mentioned spark gap (11).

Abstract: A glow plug includes a heating rod (11), a plug body, a mounting device for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body, a load sensor which is interposed between the heating rod and the plug body, and an electrical link, called the sensor link (71), which includes at least one signal line (74). The sensor link includes an earth conductive layer (82) which is interposed radially between the electrical power supply link of the heating rod and each signal line, to form a screening.

Abstract: A sensor includes a piezoelectric detector (10) mounted in a support having electrically conductive walls forming a mechanical ground (MM), and an amplifier for processing the signal delivered by the piezoelectric detector, defining an electronic ground (ME) and at least a capacitive feedback loop (16). A voltage adder circuit (61) is inserted into the capacitive feedback loop in order to add an electrical voltage which varies as a function of the potential difference between the mechanical ground (MM) and the electronic ground (ME), so that the variations of this potential difference are continuously compensated for at the input (13) of the processing amplifier (12) receiving the signal delivered by the piezoelectric detector (10).

Abstract: A glow plug includes a heating rod (11), a plug body (13), a mounting device (48) for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body and ensuring impermeability between the heating rod and the plug body, and a load sensor (17) which is interposed in a proximal zone between the heating rod and the plug body. The plug body is composed of multiple distinct metal tubes (45, 95) which are rigidly assembled and extend each other axially, including, around the mounting device and the load sensor, a metal distal tube (45) extending a metal proximal tube (95), the distal tube having a lesser thickness than that of the proximal tube.

Abstract: A glow plug includes a heating rod (11), a plug body (13) having a receiving housing (14) of the heating rod, a receiving sleeve (16) which is fixed rigidly and impermeably to the proximal portion of the heating rod, and a load sensor (17). The receiving sleeve (16) has a distal extremity portion which is turned up on the proximal side towards the exterior, and connected rigidly and impermeably to the plug body, so as to form a turned-up part (26) which is elastic in flexion and impermeable.

Abstract: A method and a circuit for processing a signal supplied by a piezoelectric sensor (10) indicating the cylinder pressure of a piston engine such as a heat engine. Undesirable variations in the value of the signal supplied by the sensor and corresponding to plateaux in the pressure are compensated by a closed-loop servo control which is suitable for setting an output signal to a predetermined constant reference value, independently of undesirable variations in the signal from the sensor (10). The value of the output signal is sampled, and at each sampling moment, if the absolute value of the variation in the output signal is less than a comparison value, the servo control is kept active. A circuit for processing and a pressure-measuring device including a circuit of this kind is also described.

Abstract: A glow plug includes a heating rod (11), a plug body (13) having a receiving housing (14) of the heating rod, a mounting device (48) for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body and ensuring impermeability between the heating rod and the plug body, a load sensing sleeve (17) which extends around the proximal portion (50) of the peripheral metal tube (59, 61) of the heating rod in the proximal zone (51) of the receiving housing, directly adjoining axially the mounting device (48) axially on the proximal side.

Abstract: A method and a circuit for processing a signal supplied by a piezoelectric sensor (10) indicating the cylinder pressure of a piston engine such as a heat engine. Undesirable variations in the value of the signal supplied by the sensor and corresponding to plateaux in the pressure are compensated by a closed-loop servo control which is suitable for setting an output signal to a predetermined constant reference value, independently of undesirable variations in the signal from the sensor (10). The value of the output signal is sampled, and at each sampling moment, if the absolute value of the variation in the output signal is less than a comparison value, the servo control is kept active. A circuit for processing and a pressure-measuring device including a circuit of this kind is also described.