Hemispherical combustion chamber. In this design combustion chamber is approximately the shape of hemisphere. An intake valve is on one side of the combustion chamber and an exhaust valve is on the other. This provides a cross flow the air-fuel mixture enters the chamber on one side and combustion gases on the other.
Congress set up PBGC to insure the defined-benefit pensions of working Americans. Defined-benefit pension plans are traditional pensions that pay a certain amount each month after you retire. If you have a pension from a private-sector job, you are probably one of the 44 million Americans covered by PBGC insurance protection. PBGC insures nearly 26,000 pension plans.
Some pension plans require the employee to make a small, periodic contribution to the fund. The amount of pension that a pensioner receives depends on the type of pension plan. Pension plans generally can be divided into two categories: defined benefit plans and defined contribution plans. A defined benefit plan provides a set amount of benefits to a pensioner. Under a defined contribution plan, the employer places a certain amount of money in the employee's name into the pension fund and makes no promises concerning the level of pension benefits that the employee will receive upon retirement.