example.
When the throttle valve is quickly closed, a negative pressure in a surge tank of the engine may be significantly increased. Conventional engines may have a sensor to detect a negative pressure in the surge tank. When a relatively large, rapid increase of negative pressure is detected in the surge tank, the regulating valve can be opened to allow secondary air to flow into the surge tank to reduce the negative pressure. The secondary air is often delivered through the regulating valve, the bypass tube, and to the internal combustion engine. In this manner, when the throttle valve is rapidly closed, secondary air is delivered to the internal combustion engine to maintain operation of the engine. Thus, the secondary air delivered to the engine can prevent unintentional engine‘took them in hand and … worked with them every afternoon for three hours till February.’ That month they entered a series of rowing meets against all the other colleges at Oxford. ‘My boys were competing against crews composed of men who had been rowing since they were tiny tots,’ Kimball said. ‘This group I had was made up of inexperienced boys. But they had trained hard, and not one of them, so far as I know, used a cigarette during this period, or had a cup of tea or coffee, or drank any alcoholic drink.’

“Still, when the day of the race came, no one thought the inexperienced crew had even the remotest chance of winning. When the cannon sounded, starting the mile-and-one-half race up the Thames River,