Abstract:
A torch jet spark plug (10) for use in a spark ignition system of an internal combustion engine. The spark plug (10) provides for ignition of an air/fuel mixture within a combustion prechamber (12) within the plug (10), which creates a jet of burning gases that are propelled through an orifice (32) into the engine main combustion chamber to increase the burning rate of the air/fuel mixture within the combustion chamber. The orifice (32) is oriented in the plug (10) so that its axis is not parallel with the longitudinal axis of the plug (10), enabling the jet of burning gases to be selectively directed to any desired region within the combustion chamber, such as a region within the chamber that would not otherwise burn well compared to other regions of the chamber.
Abstract:
A planar oxygen sensor (1) having a pump cell (2), a reference cell (4), a sensor chamber (6) and a heating device (8), a ground plane electrode (10) including a sensing portion (18) having a first sense lead (20) and a second sense lead (22) and a measuring portion (24) having a first measuring lead (26) and a second measuring lead (28), wherein the first measuring lead (26) and the second measuring lead (28) have increased surface area relative to said sensing portion (18) such that the resistance between the first measuring lead (26) and the second measuring lead (28) is reduced and wherein the first measuring lead (26) is disposed so as to be communicated with the first sense lead (20) and the second measuring lead (28) is disposed so as to be communicated with the second sense lead (22). A method for measuring the temperature in a planar oxygen sensor (1) having a pump cell (2), a reference cell (4), a sensor chamber (6), a heating device (8) and a ground plane electrode (10) that includes a sensing portion (18) having a first sense lead (20) and a second sense lead (22) and a measuring portion (24) having a first measuring lead (26) and a second measuring lead (28). The method includes obtaining a temperature measurement device (52), communicating the temperature measurement device (52) with the first measuring lead (26) and the second measuring lead (28), operating the planar oxygen sensor (1) so as to cause the heating device (8) to heat the planar oxygen sensor (1), and measuring the resistance between the first measuring lead (26) and the second measuring lead (28).
Abstract:
A torch jet spark plug (10) for use in a spark ignition system of an internal combustion engine. The spark plug (10) provides for ignition of an air/fuel mixture within a combustion prechamber (12) within the plug (10), which creates a jet of burning gases that are propelled through an orifice (32) into the engine main combustion chamber to increase the burning rate of the air/fuel mixture within the combustion chamber. The orifice (32) is oriented in the plug (10) so that its axis is not parallel with the longitudinal axis of the plug (10), enabling the jet of burning gases to be selectively directed to any desired region within the combustion chamber, such as a region within the chamber that would not otherwise burn well compared to other regions of the chamber.
Abstract:
A pressure-sensing ignition device (10) for use in a spark ignition system of an internal combustion engine. The device (10) generally includes a body (14) having a longitudinal axis of symmetry and an internal chamber (12). Disposed in the chamber (12) adjacent one end of the body (14) is an orifice (44) that vents the chamber (12) to the exterior of the body (14). An electrode (18) and an optical pressure transducer (24) are present within the body (14). An optical cable (22) is connected to the transducer (24) for transmitting an optical pressure signal. Means (20) is provided for conducting a current to the electrode (18) via the optical cable (22).