Abstract: A fuel injection system for an internal combustion engine is provided. The fuel injection system comprises a primary fuel injector, a sensor, at least one secondary fuel injector and a controller. The primary fuel injector is configured to inject fuel into an ignition chamber of the internal combustion engine. The sensor is coupled to the primary fuel injector, wherein the sensor is configured to sense a fuel pressure of the fuel being injected by the primary fuel injector throughout each injection cycle of the primary fuel injector. The at least one secondary fuel injector is configured to inject fuel into a respective ignition chamber of the internal combustion engine. The controller is configured to receive data indicative of the fuel pressure value throughout each injection cycle. The controller is configured to determine a fuel quantity drift parameter over a plurality of fuel injection cycles based on the data indicative of the fuel pressure value.

Abstract: A fuel injection system for an internal combustion engine is provided. The fuel injection system comprises a primary fuel injector, a sensor, at least one secondary fuel injector and a controller. The primary fuel injector is configured to inject fuel into an ignition chamber of the internal combustion engine. The sensor is coupled to the primary fuel injector, wherein the sensor is configured to sense a fuel pressure of the fuel being injected by the primary fuel injector throughout each injection cycle of the primary fuel injector. The at least one secondary fuel injector is configured to inject fuel into a respective ignition chamber of the internal combustion engine. The controller is configured to receive data indicative of the fuel pressure value throughout each injection cycle. The controller is configured to determine a fuel quantity drift parameter over a plurality of fuel injection cycles based on the data indicative of the fuel pressure value.

Abstract: A test fixture for testing firearms or ammunition includes a base, a block, and a firing pin. The base has a lateral channel defining a front upright and a rear upright. The front upright is configured to support a firearm barrel. The block is rotatable within the lateral channel between an open position and a closed position. The open position provides user access to the firearm barrel. The firing pin is housed in the block. The closed position of the block aligns the firing pin with the firearm barrel.

Abstract: A test fixture for testing firearms or ammunition according to the present disclosure includes a base, a barrel retention assembly, a door, and a firing pin. The base includes a longitudinal channel. The barrel retention assembly is configured to support a firearm barrel in the longitudinal channel. The door is pivotably mounted to the base and is configured to move from a closed position contacting a rear face of the base to an open position spaced from the rear face of the base. The firing pin is supported in a housing. The housing is slideably supported within the base and is configured to move between a first position and a second position. The first position aligns the firing pin and a longitudinal axis of the barrel retention assembly and the second position provides access to the barrel retention assembly.

Abstract: A test fixture for testing firearms or ammunition according to the present disclosure includes a base, a barrel retention assembly, a door, and a firing pin. The base includes a longitudinal channel. The barrel retention assembly is configured to support a firearm barrel in the longitudinal channel. The door is pivotably mounted to the base and is configured to move from a closed position contacting a rear face of the base to an open position spaced from the rear face of the base. The firing pin is supported in a housing. The housing is slideably supported within the base and is configured to move between a first position and a second position. The first position aligns the firing pin and a longitudinal axis of the barrel retention assembly and the second position provides access to the barrel retention assembly.

Abstract: A test fixture for testing firearms or ammunition includes a base, a block, and a firing pin. The base has a lateral channel defining a front upright and a rear upright. The front upright is configured to support a firearm barrel. The block is rotatable within the lateral channel between an open position and a closed position. The open position provides user access to the firearm barrel. The firing pin is housed in the block. The closed position of the block aligns the firing pin with the firearm barrel.

Abstract: A fuel injector for injecting fuel vapor into a combustion chamber of an internal combustion engine is disclosed. The fuel injector may be configured to reduce production of particulate matter during combustion of fuel. The fuel injector may have a spray nozzle having a tip and a plurality of spray discharge orifices formed on the tip. The plurality of spray discharge orifices being configured to discharge fuel vapor at a flow rate of 750-795 cc/min.