Abstract: Methods and systems for adjusting timing of fuel injectors to reduce cylinder to cylinder air-fuel maldistribution are disclosed. In one example, fuel injection timing is adjusted as a function of pressure ratios that are based on fuel rail pressures observed during injection of fuel. The pressure ratio may be a ratio of a root-mean-square pressure and a scheduling fuel pressure.

Abstract: Mobility devices are provided that enable a user to walk when the user's lower leg is in a non-functioning condition. A mobility device includes a main body, a lower leg support, an upper leg support, and a foot. The main body can be secured to a lateral side of the user's upper leg with the upper leg support. The lower leg support is connected to the main body and supports the user's lower leg. The foot is connected to a lower end of the main body and is configured to engage the ground. The foot may have a split foot configuration with a first portion and a second portion. The first portion of the foot is positioned rearward of the main body and the second portion of the foot is positioned forward of the main body. Each of the first and second foot portions may have an arcuately shaped profile.

Abstract: Mobility devices are provided that enable a user to walk when the user's lower leg is in a non-functioning condition. A mobility device includes a main body, a lower leg support, an upper leg support, and a foot. The main body can be secured to a lateral side of the user's upper leg with the upper leg support. The lower leg support is connected to the main body and supports the user's lower leg. The foot is connected to a lower end of the main body and is configured to engage the ground. The foot may have a split foot configuration with a first portion and a second portion. The first portion of the foot is positioned rearward of the main body and the second portion of the foot is positioned forward of the main body. Each of the first and second foot portions may have an arcuately shaped profile.