Penalty brake scheme for straight air pipe brake control equipment

A penalty brake scheme for a rail vehicle having a brake control apparatus to apply and release the brakes of said rail vehicle, said brake control apparatus including a first means for providing a service brake control pressure in accordance with a command for a service brake application, a second means for providing an emergency brake control pressure in accordance with a command for an emergency brake application, a standard check valve means for conveying the higher of said service and said emergency brake control pressures received from said first means and said second means, and a standard load valve means for effecting operation of said brake control apparatus in response to whichever of said brake control pressures is received from said standard check valve means, said penalty brake scheme comprising:

• (a) a third means for providing a penalty brake control pressure in response to a command for a penalty brake application;
• and
• (b) a penalty check valve means connected between said first means, said third means and said standard check valve means for conveying the higher of said service brake control pressure and said penalty brake control pressure received from said first means and said third means, respectively, to said standard check valve means such that said standard check valve means conveys the higher of said emergency brake control pressure and said service or said penalty brake control pressures received from said second means and said penalty check valve means, respectively, to said standard load valve means so that said standard load valve means effects operation of said brake control apparatus in response to whichever of said brake control pressures is received from said standard check valve means.